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esu.vn

esu.vn is SSL secured

Free website and domain report on esu.vn

Last Updated: 19th July, 2020 Update Now
Overview

Snoop Summary for esu.vn

This is a free and comprehensive report about esu.vn. Esu.vn is hosted in Vietnam on a server with an IP address of 103.1.236.14, where the local currency is VND and Vietnamese is the local language. If esu.vn was to be sold it would possibly be worth $511 USD (based on the daily revenue potential of the website over a 24 month period). Esu.vn is somewhat popular with an estimated 241 daily unique visitors. This report was last updated 19th July, 2020.

About esu.vn

Site Preview: esu.vn esu.vn
Title: Bán tên miền esu.vn | Sell domain esu.vn
Description: Bán tên miền esu.vn | Sell domain esu.vn - Tên miền này có thể dành cho các tổ chức giáo dục (Education support unit). Tên miền này có thể dành cho trường đại học; Rút gọn link kiếm tiền (Easy shorten URL)
Keywords and Tags: beautiful domain, bán tên miền đẹp, esu.vn - tên miền này có thể dành cho các tổ chức giáo dục (education support unit). tên miền này có thể dành cho trường đại học; rút gọn link kiếm tiền (easy shorten url), online shopping, sell beautiful domain, tên miền đẹp
Related Terms: easy elf on the shelf ideas, game mien phi, hen ho toi nay, joshs all under ten llc, nhac chuong mien phi, number ten, tao blog mien phi, ten by ten, ten minute school, xo so mien bac
Fav Icon:
Age:
Domain Created:
Domain Updated:
Domain Expires:
Review

Snoop Score

1/5

Valuation

$511 USD
Note: All valuation figures are estimates.

Popularity

Low
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 5,714,442
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority: 0
Moz Page Authority: 0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors: 241
Monthly Visitors: 7,334
Yearly Visitors: 87,950
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $1 USD
Monthly Revenue: $21 USD
Yearly Revenue: $251 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top New Follow Links

Top Ranking Keywords (US)

Domain Analysis

Value Length
Domain: esu.vn 6
Domain Name: esu 3
Extension (TLD): vn 2

Page Speed Analysis

Average Load Time:
Load Time Comparison:

PageSpeed Insights

Avg. (All Categories) 65
Performance 84
Accessibility 53
Best Practices 69
SEO 100
Progressive Web App 19
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
Simulate loading on desktop
84

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for esu.vn. This includes details about optimizing page load times which can result in a better user experience.

Metrics

First Contentful Paint — 0.7 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 0.7 s
The timing of the largest text or image that is painted.
Time to Interactive — 1.7 s
The time taken for the page to become fully interactive.
Total Blocking Time — 0 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Cumulative Layout Shift — 0.005
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

First CPU Idle — 1.7 s
The time taken for the page's main thread to be quiet enough to handle input.
Max Potential First Input Delay — 50 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 0.7 s
The time taken for the primary content of the page to be rendered.
Estimated Input Latency — 10 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive esu.vn as laggy when the latency is higher than 0.05 seconds.
Network Requests
Below is a list of network requests that were made during page load.
URL Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
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0
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Stylesheet
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Script
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Stylesheet
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Font
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XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
6360.775
14.692
6406.313
7.385
8848.015
38.311
8886.438
41.613
8930.101
5.582
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19.838
8971.442
20.553
10339.571
6.382
12041.005
51.634
12213.249
7.743
12270.286
11.627
12281.951
102.028
12393.977
6.914
12426.725
5.895
12432.957
11.645
12451.141
6.351
12460.044
8.864
12472.189
15.816
12503.219
6.49
12510.107
9.246
12525.532
5.836
12539.08
7.962
12549.188
13.156
12562.417
13.304
12575.773
10.364
12586.184
23.169
12610.573
87.081
12701.856
10.94
12720.099
5.694
12726.113
5.268
12731.82
5.979
12758.506
6.046
12766.082
6.574
12829.7
32.793
12874.909
5.796
13624.95
7.578
13633.34
9.477
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Opportunities

Eliminate render-blocking resources — Potential savings of 110 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Esu.vn should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/huunhan.style.domainsale.css
1059
70
https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css
24146
350
https://cdnjs.cloudflare.com/ajax/libs/limonte-sweetalert2/7.0.2/sweetalert2.css
5330
270
Properly size images
Images can slow down the page's load time. Esu.vn should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Esu.vn should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Esu.vn should consider minifying CSS files.
Minify JavaScript — Potential savings of 3 KiB
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Esu.vn should consider minifying JS files.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://cdnjs.cloudflare.com/ajax/libs/limonte-sweetalert2/7.0.2/sweetalert2.all.js
17981
3152
Remove unused CSS — Potential savings of 121 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Esu.vn should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3/yB/l/0,cross/vTVU9Y3Z-DS.css?_nc_x=Ij3Wp8lg5Kz
67928
67671
https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css
24146
23386
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/bootstrap.min.css
21310
21310
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/all.css
11286
11286
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 11 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3/yA/r/PqZx7wu_oeN.png
24380
10814
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Esu.vn should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
(Start) http://esu.vn/
0
https://esu.vn/
190
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Esu.vn should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.

Diagnostics

Avoids enormous network payloads — Total size was 1,500 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3iSa94/yZ/l/vi_VN/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
133041
https://static.xx.fbcdn.net/rsrc.php/v3iEpO4/yI/l/en_US/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
132893
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.woff
93120
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
87605
https://static.xx.fbcdn.net/rsrc.php/v3i7cY4/y2/l/vi_VN/-LL11gZYvA8.js?_nc_x=Ij3Wp8lg5Kz
85517
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
77733
https://static.xx.fbcdn.net/rsrc.php/v3iAcg4/yR/l/vi_VN/1_srCvZbF1K.js?_nc_x=Ij3Wp8lg5Kz
77178
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.html
72095
https://static.xx.fbcdn.net/rsrc.php/v3/yB/l/0,cross/vTVU9Y3Z-DS.css?_nc_x=Ij3Wp8lg5Kz
67928
https://static.xx.fbcdn.net/rsrc.php/v3/yc/r/vF53In0Ed5I.js?_nc_x=Ij3Wp8lg5Kz
55512
Avoids an excessive DOM size — 120 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
120
Maximum DOM Depth
SHOW DETAILS
16
Maximum Child Elements
SHOW DETAILS
12
Avoid chaining critical requests — 10 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Esu.vn should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.2 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://esu.vn/
155.065
4.279
1.404
https://static.xx.fbcdn.net/rsrc.php/v3iLCR4/ya/l/vi_VN/pcDPhmxQ5VO.js?_nc_x=Ij3Wp8lg5Kz
94.625
76.753
2.572
https://www.facebook.com/v7.0/plugins/customerchat.php?app_id=&attribution=setup_tool&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Df3fa646533dbcd8%26domain%3Desu.vn%26origin%3Dhttps%253A%252F%252Fesu.vn%252Ff127c4afe2be404%26relation%3Dparent.parent&container_width=0&locale=vi_VN&logged_in_greeting=Xin%20ch%C3%A0o!%20Anh%2F%20Ch%E1%BB%8B%20c%E1%BA%A7n%20em%20h%E1%BB%97%20tr%E1%BB%A3%20th%C3%B4ng%20tin%20g%C3%AC%20kh%C3%B4ng%20%E1%BA%A1%3F&logged_out_greeting=Xin%20ch%C3%A0o!%20Anh%2F%20Ch%E1%BB%8B%20c%E1%BA%A7n%20em%20h%E1%BB%97%20tr%E1%BB%A3%20th%C3%B4ng%20tin%20g%C3%AC%20kh%C3%B4ng%20%E1%BA%A1%3F&page_id=113906653330747&request_time=1595163166117&sdk=joey
87.799
41.796
7.64
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
83.838
60.978
8.74
Unattributable
78.777
2.02
0.266
https://esu.vn/frontend/esu-vn-v2/assets/hn_js/jquery-1.12.4.min.js
51.501
41.858
1.6
Minimizes main-thread work — 0.9 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
405.277
Other
165.058
Style & Layout
127.815
Script Parsing & Compilation
124.383
Parse HTML & CSS
51.551
Rendering
35.644
Garbage Collection
16.802
Keep request counts low and transfer sizes small — 62 requests • 1,500 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
62
1535631
Script
37
968972
Font
2
165215
Stylesheet
10
151631
Other
3
134739
Document
4
84453
Image
6
30621
Media
0
0
Third-party
54
1297496
Minimize third-party usage — Third-party code blocked the main thread for 20 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
1195441
18.547
SHOW DETAILS
34887
0
SHOW DETAILS
24146
0
SHOW DETAILS
23311
0
SHOW DETAILS
19711
0
SHOW DETAILS
0
0
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Rút gọn link miễn phí
Avoid large layout shifts — 3 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Trung tâm buôn bán Xin chào! Anh/ Chị cần em hỗ trợ thông tin gì không ạ? Đăng …
0.61458333333333
Thông tin tên miền Tên miền esu.vn Ý nghĩa Dành cho các tổ chức giáo dục (Educa…
0.0042205838668732
Các bước đăng ký mua tên miền Bước 1: Liên hệ với người bán theo thông tin bê…
0.00053486661907379
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 1 long task found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
1710
51

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Opportunities

Remove unused JavaScript — Potential savings of 491 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3iEpO4/yI/l/en_US/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
132893
109870
https://static.xx.fbcdn.net/rsrc.php/v3i7cY4/y2/l/vi_VN/-LL11gZYvA8.js?_nc_x=Ij3Wp8lg5Kz
85517
78316
https://static.xx.fbcdn.net/rsrc.php/v3iAcg4/yR/l/vi_VN/1_srCvZbF1K.js?_nc_x=Ij3Wp8lg5Kz
77178
70277
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
87605
54014
https://static.xx.fbcdn.net/rsrc.php/v3/yc/r/vF53In0Ed5I.js?_nc_x=Ij3Wp8lg5Kz
55512
50342
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
77733
43758
https://static.xx.fbcdn.net/rsrc.php/v3iFem4/yg/l/vi_VN/Bg-LsLYhtPf.js?_nc_x=Ij3Wp8lg5Kz
35565
29371
https://static.xx.fbcdn.net/rsrc.php/v3iijV4/yx/l/vi_VN/N0OKi8PTfoi.js?_nc_x=Ij3Wp8lg5Kz
26241
23158
https://static.xx.fbcdn.net/rsrc.php/v3/yN/r/Q8Tt-ZyNK2N.js?_nc_x=Ij3Wp8lg5Kz
24352
22748
https://static.xx.fbcdn.net/rsrc.php/v3/yQ/r/IvsTAu6323Y.js?_nc_x=Ij3Wp8lg5Kz
46812
20849

Metrics

Speed Index — 6.7 s
The time taken for the page contents to be visibly populated.

Opportunities

Reduce initial server response time — Root document took 3,730 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.

Diagnostics

Serve static assets with an efficient cache policy — 9 resources found
Esu.vn can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.woff
0
93120
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.html
0
72095
https://esu.vn/frontend/esu-vn-v2/assets/hn_js/jquery-1.12.4.min.js
0
33909
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/bootstrap.min.css
0
21310
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/all.css
0
11286
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/huunhan.style.domainsale.css
0
1059
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
1200000
77733
https://www.google-analytics.com/analytics.js
7200000
19110
https://scontent-mia3-2.xx.fbcdn.net/v/t1.0-1/cp0/p80x80/69953172_113906849997394_3329303943137198080_o.png?_nc_cat=110&_nc_sid=dbb9e7&_nc_ohc=dgqU2CYVNbcAX-7GoQ1&_nc_ht=scontent-mia3-2.xx&oh=811999b973b507fdec145c9e08552e51&oe=5F3949D7
1209600000
1364
Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.html
1478.2000000123
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.woff
1700.2420001663
53

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of esu.vn. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
It is advised to not include data elements in tables which are used for layout purposes, as it may create confusion for screen reader and other assistive technology users.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Esu.vn may provide assistance to deaf or hearing-impaired users with captions on videos.
`<video>` elements contain a `<track>` element with `[kind="description"]`
Esu.vn may provide relevant information that dialogue cannot, by using audio descriptions.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
RÚT GỌN
esu.vn
Dành cho các tổ chức giáo dục (Education support unit).
Dành cho trường đại học.
Rút gọn link kiếm tiền (Easy shorten URL).
Và nhiều ý nghĩa khác nữa với tên miền: esu.vn.
40.000.000 VNĐ
08 4680 4680
tên miền đẹp
Lưu ý: Hệ thống chỉ phụ trách truyền tải thông Sản phẩm/Dịch vụ đến người có nh…
Lưu ý:
Du lịch Việt Nam
Hình ảnh du lịch
Đặc sản bình định
Gowhere Việt Nam
Bán tên miền esu.vn

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
iframe
iframe
Form elements do not have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Failing Elements
input

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
Thông tin tên miền

Internationalization and localization

`<html>` element does not have a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
Failing Elements
html

Tables and lists

Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
Failing Elements
ul

Best practices

`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Failing Elements
meta

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
69

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that esu.vn should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.12.4
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.

Audits

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://esu.vn/
http://fonts.googleapis.com/css?family=Open+Sans:400,600,700
Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
Includes front-end JavaScript libraries with known security vulnerabilities — 4 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
4
Medium

Audits

Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
URL Description
https://esu.vn/
Mixed Content: The page at 'https://esu.vn/' was loaded over HTTPS, but requested an insecure stylesheet 'http://fonts.googleapis.com/css?family=Open+Sans:400,600,700'. This request has been blocked; the content must be served over HTTPS.
https://esu.vn/
Mixed Content: The page at 'https://esu.vn/' was loaded over HTTPS, but requested an insecure stylesheet 'http://fonts.googleapis.com/css?family=Open+Sans:400,600,700'. This request has been blocked; the content must be served over HTTPS.
100

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for esu.vn. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of esu.vn on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
19

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of esu.vn. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of esu.vn on mobile screens.
Contains some content when JavaScript is not available
Apps should display alternative content for when JavaScript is disabled.

Fast and reliable

Page load is not fast enough on mobile networks — Interactive on simulated mobile network at 13.0 s
Ensure that the page loads fast enough over a cellular network, to ensure good mobile user experience.
Current page does not respond with a 200 when offline
In order for Progressive Web Apps to be made available offline, ensure that the app is using a service worker.
`start_url` does not respond with a 200 when offline
Consider using a service worker for Progressive Web Apps to ensure greater reliability for the user, in the case of poor network conditions.

Installable

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://esu.vn/
http://fonts.googleapis.com/css?family=Open+Sans:400,600,700
Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Web app manifest does not meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
View Data

PWA Optimized

Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 58
Performance 47
Accessibility 53
Best Practices 69
SEO 100
Progressive Web App 21
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
Simulate loading on mobile
47

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for esu.vn. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.01
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Opportunities

Properly size images
Images can slow down the page's load time. Esu.vn should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Esu.vn should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Esu.vn should consider minifying CSS files.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 11 KiB
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3/yA/r/PqZx7wu_oeN.png
24380
10814
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Esu.vn should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
(Start) http://esu.vn/
0
https://esu.vn/
630
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Esu.vn should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.

Diagnostics

Avoids enormous network payloads — Total size was 1,498 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3iSa94/yZ/l/vi_VN/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
133041
https://static.xx.fbcdn.net/rsrc.php/v3iEpO4/yI/l/en_US/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
132893
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.woff
93119
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
87605
https://static.xx.fbcdn.net/rsrc.php/v3i7cY4/y2/l/vi_VN/-LL11gZYvA8.js?_nc_x=Ij3Wp8lg5Kz
85517
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
77733
https://static.xx.fbcdn.net/rsrc.php/v3iAcg4/yR/l/vi_VN/1_srCvZbF1K.js?_nc_x=Ij3Wp8lg5Kz
77178
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.html
72094
https://static.xx.fbcdn.net/rsrc.php/v3/yB/l/0,cross/vTVU9Y3Z-DS.css?_nc_x=Ij3Wp8lg5Kz
67928
https://static.xx.fbcdn.net/rsrc.php/v3/yc/r/vF53In0Ed5I.js?_nc_x=Ij3Wp8lg5Kz
55512
Avoids an excessive DOM size — 121 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
121
Maximum DOM Depth
SHOW DETAILS
16
Maximum Child Elements
SHOW DETAILS
12
Avoid chaining critical requests — 10 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Esu.vn should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Keep request counts low and transfer sizes small — 61 requests • 1,498 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
61
1534358
Script
38
1102012
Font
2
165213
Stylesheet
10
151631
Document
4
84547
Image
5
29257
Other
2
1698
Media
0
0
Third-party
53
1296223
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Dành cho các tổ chức giáo dục (Education support unit).
Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Trung tâm buôn bán Xin chào! Anh/ Chị cần em hỗ trợ thông tin gì không ạ?
0.53333333333333
Thông tin tên miền Tên miền esu.vn Ý nghĩa Dành cho các tổ chức giáo dục (Educa…
0.0092855578488749
Thông tin tên miền
0.00079777944024248
Rút gọn link kiếm tiền (Easy shorten URL).
0.00029508508535285
::marker
1.1226063029728E-5
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 16 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
7740
262
https://static.xx.fbcdn.net/rsrc.php/v3issO4/ya/l/vi_VN/uBPfXhmsHDC.js?_nc_x=Ij3Wp8lg5Kz
12900
255
https://static.xx.fbcdn.net/rsrc.php/v3iSa94/yZ/l/vi_VN/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
7050
214
https://static.xx.fbcdn.net/rsrc.php/v3i7cY4/y2/l/vi_VN/-LL11gZYvA8.js?_nc_x=Ij3Wp8lg5Kz
10560
162
https://static.xx.fbcdn.net/rsrc.php/v3iEpO4/yI/l/en_US/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
13710
160
https://www.googletagmanager.com/gtag/js?id=UA-100363056-37
3632
129
https://esu.vn/frontend/esu-vn-v2/assets/hn_js/jquery-1.12.4.min.js
2520
103
https://www.google-analytics.com/analytics.js
4020
97
https://static.xx.fbcdn.net/rsrc.php/v3iAcg4/yR/l/vi_VN/1_srCvZbF1K.js?_nc_x=Ij3Wp8lg5Kz
9480
97
https://esu.vn/
1184
93
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
3540
92
https://static.xx.fbcdn.net/rsrc.php/v3/yc/r/vF53In0Ed5I.js?_nc_x=Ij3Wp8lg5Kz
9240
77
https://static.xx.fbcdn.net/rsrc.php/v3/yB/l/0,cross/vTVU9Y3Z-DS.css?_nc_x=Ij3Wp8lg5Kz
6660
71
https://static.xx.fbcdn.net/rsrc.php/v3i_954/yC/l/vi_VN/ydHXQ9s2Xyz.js?_nc_x=Ij3Wp8lg5Kz
12150
70
https://esu.vn/
1110
61
https://static.xx.fbcdn.net/rsrc.php/v3issO4/ya/l/vi_VN/uBPfXhmsHDC.js?_nc_x=Ij3Wp8lg5Kz
13155
52

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Other

Network Requests
Below is a list of network requests that were made during page load.
URL Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://esu.vn/
0
515.58699971065
287
0
301
text/html
https://esu.vn/
515.95399994403
1970.4959997907
5072
11740
200
text/html
Document
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/huunhan.style.domainsale.css
1992.6189999096
3116.9280000031
1059
1773
200
text/css
Stylesheet
https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css
1992.933999747
2025.4029999487
24146
159515
200
text/css
Stylesheet
https://cdnjs.cloudflare.com/ajax/libs/limonte-sweetalert2/7.0.2/sweetalert2.css
1993.3159998618
2026.3179996982
5330
36075
200
text/css
Stylesheet
https://esu.vn/frontend/esu-vn-v2/assets/hn_js/jquery-1.12.4.min.js
1993.6959999613
2576.3659998775
33908
96631
200
application/javascript
Script
https://cdnjs.cloudflare.com/ajax/libs/limonte-sweetalert2/7.0.2/sweetalert2.all.js
1994.320999831
2027.0619997755
17981
94358
200
application/javascript
Script
https://www.googletagmanager.com/gtag/js?id=UA-100363056-37
1994.6349998936
2012.616999913
34887
86783
200
application/javascript
Script
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/bootstrap.min.css
3118.9899998717
3416.2409999408
21309
140422
200
text/css
Stylesheet
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/all.css
3119.589000009
4147.2799996845
11287
50414
200
text/css
Stylesheet
http://fonts.googleapis.com/css?family=Open+Sans:400,600,700
3118.9529998228
3118.9560000785
0
0
-1
Stylesheet
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
4154.4629996642
4177.3639996536
77733
267082
200
application/x-javascript
Script
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.html
4166.4519999176
4685.989999678
72094
71731
200
text/html
Font
https://www.google-analytics.com/analytics.js
4276.7960000783
4281.9570000283
19110
45958
200
text/javascript
Script
https://www.google-analytics.com/r/collect?v=1&_v=j83&a=171117468&t=pageview&_s=1&dl=https%3A%2F%2Fesu.vn%2F&ul=en-us&de=UTF-8&dt=B%C3%A1n%20t%C3%AAn%20mi%E1%BB%81n%20esu.vn%20%7C%20Sell%20domain%20esu.vn&sd=24-bit&sr=360x640&vp=360x640&je=0&_u=IEBAAUAB~&jid=217333729&gjid=1576519094&cid=945948926.1595163189&tid=UA-100363056-37&_gid=2087151042.1595163189&_r=1&gtm=2ou783&z=1487069602
4332.0509996265
4335.7679997571
601
35
200
image/gif
Image
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.woff
4688.5369997472
4984.5340000466
93119
92696
200
application/x-font-woff
Font
https://www.facebook.com/v7.0/plugins/customerchat.php?app_id=&attribution=setup_tool&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Df298c9f021aecc4%26domain%3Desu.vn%26origin%3Dhttps%253A%252F%252Fesu.vn%252Ff3bc9c118beb3f8%26relation%3Dparent.parent&container_width=0&locale=vi_VN&logged_in_greeting=Xin%20ch%C3%A0o!%20Anh%2F%20Ch%E1%BB%8B%20c%E1%BA%A7n%20em%20h%E1%BB%97%20tr%E1%BB%A3%20th%C3%B4ng%20tin%20g%C3%AC%20kh%C3%B4ng%20%E1%BA%A1%3F&logged_out_greeting=Xin%20ch%C3%A0o!%20Anh%2F%20Ch%E1%BB%8B%20c%E1%BA%A7n%20em%20h%E1%BB%97%20tr%E1%BB%A3%20th%C3%B4ng%20tin%20g%C3%AC%20kh%C3%B4ng%20%E1%BA%A1%3F&page_id=113906653330747&request_time=1595163189911&sdk=joey
5025.7689999416
5119.4969997741
48093
200646
200
text/html
Document
https://www.facebook.com/v7.0/plugins/like.php?action=like&app_id=&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Dfe1948c3c6f17c%26domain%3Desu.vn%26origin%3Dhttps%253A%252F%252Fesu.vn%252Ff3bc9c118beb3f8%26relation%3Dparent.parent&container_width=290&href=https%3A%2F%2Fesu.vn%2F&layout=button_count&locale=vi_VN&sdk=joey&share=true&show_faces=true&size=small
5048.8979998045
5108.9669996873
18557
56832
200
text/html
Document
https://static.xx.fbcdn.net/rsrc.php/v3/y5/r/OqOE21UvWe3.png
5126.9009998068
5143.001999706
1016
400
200
image/png
Image
https://static.xx.fbcdn.net/rsrc.php/v3iSa94/yZ/l/vi_VN/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
5132.2709997185
5159.4199999236
133041
523148
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yf/l/0,cross/Nu_Ta-zzuqM.css?_nc_x=Ij3Wp8lg5Kz
5173.7629999407
5190.2799997479
2104
4026
200
text/css
Stylesheet
https://static.xx.fbcdn.net/rsrc.php/v3/yB/l/0,cross/vTVU9Y3Z-DS.css?_nc_x=Ij3Wp8lg5Kz
5173.9860000089
5213.6919996701
67928
247277
200
text/css
Stylesheet
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
5174.411999993
5204.6900000423
87605
340347
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yX/r/AyfP7w_xNNd.js?_nc_x=Ij3Wp8lg5Kz
5174.6299997903
5197.8169996291
17290
55227
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/y2/r/TTDowoplGYB.js?_nc_x=Ij3Wp8lg5Kz
5174.8449997976
5244.9579997919
5793
14845
200
application/x-javascript
Script
https://www.facebook.com/common/cavalry_endpoint.php?t_cstart=1595163190043&t_start=1595163190043&t_domcontent=1595163190078&t_layout=1595163190180&t_onload=1595163190180&t_paint=1595163190180&t_creport=1595163190180&t_tti=1595163190078&lid=6851173728853686999-0
5267.7009999752
5320.0889998116
1321
67
200
image/png
Image
https://static.xx.fbcdn.net/rsrc.php/v3iJ044/yu/l/vi_VN/qsM4fb8DuOq.js?_nc_x=Ij3Wp8lg5Kz
5404.4709997252
5427.1089998074
18084
66725
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3issO4/ya/l/vi_VN/uBPfXhmsHDC.js?_nc_x=Ij3Wp8lg5Kz
5404.7409999184
5487.60699993
8064
21410
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yb/r/MtW49XVFCdt.js?_nc_x=Ij3Wp8lg5Kz
5404.9390000291
5420.943999663
7102
20503
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/6KqFq7q8hV0.js?_nc_x=Ij3Wp8lg5Kz
5405.2399997599
5421.8419999816
3084
7684
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3iAcg4/yR/l/vi_VN/1_srCvZbF1K.js?_nc_x=Ij3Wp8lg5Kz
5405.6349997409
5432.5749999844
77178
319319
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yc/r/vF53In0Ed5I.js?_nc_x=Ij3Wp8lg5Kz
5406.0539999045
5437.4810000882
55512
241750
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/y_/r/HbiO86FaUgG.js?_nc_x=Ij3Wp8lg5Kz
5406.6049996763
5434.3339996412
5718
14950
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3iFem4/yg/l/vi_VN/Bg-LsLYhtPf.js?_nc_x=Ij3Wp8lg5Kz
5406.9639998488
5438.7610000558
35565
130353
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3i7cY4/y2/l/vi_VN/-LL11gZYvA8.js?_nc_x=Ij3Wp8lg5Kz
5407.4989999644
5442.2609996982
85517
437326
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yN/r/Q8Tt-ZyNK2N.js?_nc_x=Ij3Wp8lg5Kz
5407.8859998845
5429.333999753
24352
104987
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yH/r/Y5PJPa-3YDo.js?_nc_x=Ij3Wp8lg5Kz
5408.2359997556
5430.0409997813
9421
32404
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/ye/r/VRzSVH5iU-V.js?_nc_x=Ij3Wp8lg5Kz
5408.7189999409
5428.6589999683
2755
7738
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3iijV4/yx/l/vi_VN/N0OKi8PTfoi.js?_nc_x=Ij3Wp8lg5Kz
5409.3029997312
5430.6899998337
26241
86314
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3iLCR4/ya/l/vi_VN/pcDPhmxQ5VO.js?_nc_x=Ij3Wp8lg5Kz
5409.7259999253
5443.6149997637
24715
89948
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yF/r/_Rb3G9iK41r.js?_nc_x=Ij3Wp8lg5Kz
5410.0819998421
5435.5810000561
14547
44765
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3iWPy4/yE/l/vi_VN/AzY7pKHiYL9.js?_nc_x=Ij3Wp8lg5Kz
5410.5519996956
5431.3590000384
2374
4540
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yr/r/6lCQYHp0jKM.js?_nc_x=Ij3Wp8lg5Kz
5411.0319996253
5449.0239997394
6716
20785
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/y4/r/1aircqRpBDS.js?_nc_x=Ij3Wp8lg5Kz
5411.3759999163
5436.2530000508
19315
72732
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yr/r/H0NUMBsbxbQ.js?_nc_x=Ij3Wp8lg5Kz
5411.8499998003
5433.9879998006
4700
13889
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3ijMq4/yY/l/vi_VN/BPXbcVbW0J6.js?_nc_x=Ij3Wp8lg5Kz
5412.2389997356
5449.9949999154
15875
74128
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/ya/r/6YjW_ABj3yV.js?_nc_x=Ij3Wp8lg5Kz
5414.1619997099
5440.3709997423
11978
89813
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/ye/r/3SwkYrKNS9J.js?_nc_x=Ij3Wp8lg5Kz
5414.5019999705
5439.4489997067
3219
18285
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yQ/r/wMfRzqaR5UE.js?_nc_x=Ij3Wp8lg5Kz
5414.8039999418
5439.8169997148
1237
1402
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yC/r/4VTw2GQybLx.js?_nc_x=Ij3Wp8lg5Kz
5415.0169999339
5441.0459999926
6005
15615
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3i_954/yC/l/vi_VN/ydHXQ9s2Xyz.js?_nc_x=Ij3Wp8lg5Kz
5415.335000027
5444.4039999507
7757
24860
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yr/r/hciJw_E1E9C.js?_nc_x=Ij3Wp8lg5Kz
5415.6129998155
5445.3729996458
9106
32014
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yt/r/-C4D0kJhvbP.js?_nc_x=Ij3Wp8lg5Kz
5415.9240000881
5444.7789997794
8822
35688
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yQ/r/IvsTAu6323Y.js?_nc_x=Ij3Wp8lg5Kz
5416.4359997958
5446.4549999684
46812
155905
200
application/x-javascript
Script
https://static.xx.fbcdn.net/rsrc.php/v3/yH/l/0,cross/30Z2ZgwCJjH.css?_nc_x=Ij3Wp8lg5Kz
5417.0949999243
5447.7180000395
8968
52754
200
text/css
Stylesheet
https://static.xx.fbcdn.net/rsrc.php/v3/ym/l/0,cross/i9HPE6hLYWc.css?_nc_x=Ij3Wp8lg5Kz
5417.3649996519
5447.2059998661
9500
40048
200
text/css
Stylesheet
https://static.xx.fbcdn.net/rsrc.php/v3/yA/r/PqZx7wu_oeN.png
5754.581999965
5770.341000054
24998
24380
200
image/png
Image
https://www.facebook.com/v7.0/plugins/customer_chat/bubble
5767.7869996987
5814.442999661
12825
35357
200
text/html
Document
https://static.xx.fbcdn.net/rsrc.php/v3iEpO4/yI/l/en_US/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
5832.2499999776
5880.8059999719
132893
522711
200
application/x-javascript
Script
https://www.facebook.com/common/cavalry_endpoint.php?t_cstart=1595163190745&t_start=1595163190745&t_domcontent=1595163190755&t_layout=1595163190875&t_onload=1595163190875&t_paint=1595163190875&t_creport=1595163190875&t_tti=1595163190755&lid=6851173734660746398-0
5962.2369999997
6025.0369999558
1321
67
200
image/png
Image
https://www.facebook.com/ajax/bz?__a=1&__beoa=0&__ccg=EXCELLENT&__comet_req=0&__csr=&__dyn=7AzFQ4rUO5A9wxxt0BwRyWwHh963m1FwAxu13wFw_x-ewSwIK7Eiw8OdwJx61IK0EEe8hw8u1twbC0LVEtwMwcG0KEswcu4obEa85ufw5ZKi8wl8G1HwOwsU9kbxS0iK2-2W2C4U20wHzUuxy0wU3mwkE5G0zE&__hsi=6851173730228977230-0&__pc=PHASED%3Aplugin_default_pkg&__req=1&__rev=1002391584&__s=%3A%3Amjafta&__sp=1&__user=0&bz_orig=blue&dpr=1&locale=vi_VN
6718.055000063
6768.9979998395
1411
0
200
text/html
XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
2002.616
15.364
2058.848
9.056
3446.749
6.139
4184.176
46.746
4231.136
51.291
4285.291
7.213
4293.536
12.251
4308.287
22.981
4336.956
24.17
4723.039
7.152
5014.785
64.712
5141.441
9.617
5155.02
9.399
5164.445
10.15
5175.039
9.789
5184.846
7.049
5201.85
5.617
5233.164
53.466
5299.488
17.638
5319.403
130.902
5488.997
13.197
5535.901
7.37
5543.745
6.543
5554.221
5.672
5562.516
6.065
5572.369
24.165
5596.549
11.302
5607.971
5.421
5613.463
19.293
5632.775
8.111
5640.958
17.481
5663.689
40.399
5707.256
6.125
5718.287
63.63
5781.943
7.249
5797.849
13.851
5812
6.661
5846.917
8.296
5857.434
9.23
5948.003
40.075
5993.936
7.422
6519.982
7.136
6733.906
13.053
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Metrics

First Contentful Paint — 2.7 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 2.7 s
The timing of the largest text or image that is painted.

Other

First Meaningful Paint — 2.7 s
The time taken for the primary content of the page to be rendered.
Estimated Input Latency — 80 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive esu.vn as laggy when the latency is higher than 0.05 seconds.
First Contentful Paint (3G) — 5436.5 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.

Opportunities

Eliminate render-blocking resources — Potential savings of 480 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Esu.vn should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/huunhan.style.domainsale.css
1059
180
https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css
24146
1380
https://cdnjs.cloudflare.com/ajax/libs/limonte-sweetalert2/7.0.2/sweetalert2.css
5330
930
Minify JavaScript — Potential savings of 3 KiB
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Esu.vn should consider minifying JS files.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://cdnjs.cloudflare.com/ajax/libs/limonte-sweetalert2/7.0.2/sweetalert2.all.js
17981
3152
Remove unused CSS — Potential savings of 121 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Esu.vn should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3/yB/l/0,cross/vTVU9Y3Z-DS.css?_nc_x=Ij3Wp8lg5Kz
67928
67710
https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css
24146
23487
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/bootstrap.min.css
21309
21309
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/all.css
11287
11287

Diagnostics

Reduce JavaScript execution time — 2.4 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://esu.vn/
700.072
22.356
8.316
https://www.facebook.com/v7.0/plugins/customerchat.php?app_id=&attribution=setup_tool&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Df298c9f021aecc4%26domain%3Desu.vn%26origin%3Dhttps%253A%252F%252Fesu.vn%252Ff3bc9c118beb3f8%26relation%3Dparent.parent&container_width=0&locale=vi_VN&logged_in_greeting=Xin%20ch%C3%A0o!%20Anh%2F%20Ch%E1%BB%8B%20c%E1%BA%A7n%20em%20h%E1%BB%97%20tr%E1%BB%A3%20th%C3%B4ng%20tin%20g%C3%AC%20kh%C3%B4ng%20%E1%BA%A1%3F&logged_out_greeting=Xin%20ch%C3%A0o!%20Anh%2F%20Ch%E1%BB%8B%20c%E1%BA%A7n%20em%20h%E1%BB%97%20tr%E1%BB%A3%20th%C3%B4ng%20tin%20g%C3%AC%20kh%C3%B4ng%20%E1%BA%A1%3F&page_id=113906653330747&request_time=1595163189911&sdk=joey
472.104
206.152
40.364
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
414.54
299.556
41.876
Unattributable
349.868
10.264
1.036
https://static.xx.fbcdn.net/rsrc.php/v3issO4/ya/l/vi_VN/uBPfXhmsHDC.js?_nc_x=Ij3Wp8lg5Kz
340.24
324.404
7.424
https://www.facebook.com/v7.0/plugins/like.php?action=like&app_id=&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Dfe1948c3c6f17c%26domain%3Desu.vn%26origin%3Dhttps%253A%252F%252Fesu.vn%252Ff3bc9c118beb3f8%26relation%3Dparent.parent&container_width=290&href=https%3A%2F%2Fesu.vn%2F&layout=button_count&locale=vi_VN&sdk=joey&share=true&show_faces=true&size=small
260.612
138.296
23.2
https://esu.vn/frontend/esu-vn-v2/assets/hn_js/jquery-1.12.4.min.js
256.46
208.632
8.7
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
248.02
182.364
47.032
https://static.xx.fbcdn.net/rsrc.php/v3i7cY4/y2/l/vi_VN/-LL11gZYvA8.js?_nc_x=Ij3Wp8lg5Kz
161.02
108.404
41.672
https://www.facebook.com/v7.0/plugins/customer_chat/bubble
137.596
83.152
16.836
https://static.xx.fbcdn.net/rsrc.php/v3iSa94/yZ/l/vi_VN/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
123.724
40.708
68.096
https://static.xx.fbcdn.net/rsrc.php/v3iEpO4/yI/l/en_US/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
113.28
35.596
63.088
https://www.googletagmanager.com/gtag/js?id=UA-100363056-37
102.764
71.916
10.516
https://www.google-analytics.com/analytics.js
97.444
89.14
5.468
https://static.xx.fbcdn.net/rsrc.php/v3iAcg4/yR/l/vi_VN/1_srCvZbF1K.js?_nc_x=Ij3Wp8lg5Kz
96.76
40.888
45.94
https://static.xx.fbcdn.net/rsrc.php/v3/yc/r/vF53In0Ed5I.js?_nc_x=Ij3Wp8lg5Kz
76.468
39.952
28.94
https://static.xx.fbcdn.net/rsrc.php/v3/yB/l/0,cross/vTVU9Y3Z-DS.css?_nc_x=Ij3Wp8lg5Kz
70.552
0
0
https://static.xx.fbcdn.net/rsrc.php/v3i_954/yC/l/vi_VN/ydHXQ9s2Xyz.js?_nc_x=Ij3Wp8lg5Kz
69.36
7.676
9.448

Metrics

Speed Index — 9.4 s
The time taken for the page contents to be visibly populated.
Time to Interactive — 13.3 s
The time taken for the page to become fully interactive.
Total Blocking Time — 1,060 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Other

First CPU Idle — 12.8 s
The time taken for the page's main thread to be quiet enough to handle input.
Max Potential First Input Delay — 260 ms
Users could experience a delay when interacting with the page.

Opportunities

Remove unused JavaScript — Potential savings of 619 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://static.xx.fbcdn.net/rsrc.php/v3iEpO4/yI/l/en_US/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
132893
109870
https://static.xx.fbcdn.net/rsrc.php/v3iSa94/yZ/l/vi_VN/P3h4g6nu_2p.js?_nc_x=Ij3Wp8lg5Kz
133041
105288
https://static.xx.fbcdn.net/rsrc.php/v3i7cY4/y2/l/vi_VN/-LL11gZYvA8.js?_nc_x=Ij3Wp8lg5Kz
85517
78573
https://static.xx.fbcdn.net/rsrc.php/v3iAcg4/yR/l/vi_VN/1_srCvZbF1K.js?_nc_x=Ij3Wp8lg5Kz
77178
70584
https://static.xx.fbcdn.net/rsrc.php/v3/yO/r/h1-9vqf9EbJ.js?_nc_x=Ij3Wp8lg5Kz
87605
53981
https://static.xx.fbcdn.net/rsrc.php/v3/yc/r/vF53In0Ed5I.js?_nc_x=Ij3Wp8lg5Kz
55512
50342
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
77733
43734
https://static.xx.fbcdn.net/rsrc.php/v3iFem4/yg/l/vi_VN/Bg-LsLYhtPf.js?_nc_x=Ij3Wp8lg5Kz
35565
30687
https://static.xx.fbcdn.net/rsrc.php/v3iijV4/yx/l/vi_VN/N0OKi8PTfoi.js?_nc_x=Ij3Wp8lg5Kz
26241
23921
https://static.xx.fbcdn.net/rsrc.php/v3/yN/r/Q8Tt-ZyNK2N.js?_nc_x=Ij3Wp8lg5Kz
24352
22748
https://static.xx.fbcdn.net/rsrc.php/v3/yQ/r/IvsTAu6323Y.js?_nc_x=Ij3Wp8lg5Kz
46812
22084
https://static.xx.fbcdn.net/rsrc.php/v3iLCR4/ya/l/vi_VN/pcDPhmxQ5VO.js?_nc_x=Ij3Wp8lg5Kz
24715
21857
Reduce initial server response time — Root document took 1,460 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.

Diagnostics

Serve static assets with an efficient cache policy — 8 resources found
Esu.vn can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.woff
0
93119
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.html
0
72094
https://esu.vn/frontend/esu-vn-v2/assets/hn_js/jquery-1.12.4.min.js
0
33908
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/bootstrap.min.css
0
21309
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/all.css
0
11287
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/huunhan.style.domainsale.css
0
1059
https://connect.facebook.net/vi_VN/sdk/xfbml.customerchat.js
1200000
77733
https://www.google-analytics.com/analytics.js
7200000
19110
Minimize main-thread work — 4.7 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
2133.444
Other
806.228
Script Parsing & Compilation
672.036
Style & Layout
573.856
Parse HTML & CSS
275.42
Rendering
186.088
Garbage Collection
50.716
Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.html
519.53799976036
https://esu.vn/frontend/esu-vn-v2/assets/hn_css/hn_font/fa-solid-900.woff
295.99700029939
Reduce the impact of third-party code — Third-party code blocked the main thread for 560 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
1194168
526.02
SHOW DETAILS
19711
34.72
SHOW DETAILS
34887
0
SHOW DETAILS
24146
0
SHOW DETAILS
23311
0
SHOW DETAILS
0
0
53

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of esu.vn. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
It is advised to not include data elements in tables which are used for layout purposes, as it may create confusion for screen reader and other assistive technology users.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Esu.vn may provide assistance to deaf or hearing-impaired users with captions on videos.
`<video>` elements contain a `<track>` element with `[kind="description"]`
Esu.vn may provide relevant information that dialogue cannot, by using audio descriptions.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
RÚT GỌN
esu.vn
Dành cho các tổ chức giáo dục (Education support unit).
Rút gọn link kiếm tiền (Easy shorten URL).
Và nhiều ý nghĩa khác nữa với tên miền: esu.vn.
40.000.000 VNĐ
08 4680 4680
tên miền đẹp
Lưu ý: Hệ thống chỉ phụ trách truyền tải thông Sản phẩm/Dịch vụ đến người có nh…
Lưu ý:
Du lịch Việt Nam
Hình ảnh du lịch
Đặc sản bình định
Gowhere Việt Nam
Bán tên miền esu.vn

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
iframe
iframe
Form elements do not have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Failing Elements
input

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
Thông tin tên miền

Internationalization and localization

`<html>` element does not have a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
Failing Elements
html

Tables and lists

Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
Failing Elements
ul

Best practices

`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Failing Elements
meta

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
69

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that esu.vn should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.12.4
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.

Audits

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://esu.vn/
http://fonts.googleapis.com/css?family=Open+Sans:400,600,700
Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.
Includes front-end JavaScript libraries with known security vulnerabilities — 4 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
4
Medium

Audits

Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
URL Description
https://esu.vn/
Mixed Content: The page at 'https://esu.vn/' was loaded over HTTPS, but requested an insecure stylesheet 'http://fonts.googleapis.com/css?family=Open+Sans:400,600,700'. This request has been blocked; the content must be served over HTTPS.
https://esu.vn/
Mixed Content: The page at 'https://esu.vn/' was loaded over HTTPS, but requested an insecure stylesheet 'http://fonts.googleapis.com/css?family=Open+Sans:400,600,700'. This request has been blocked; the content must be served over HTTPS.
100

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for esu.vn. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of esu.vn on mobile screens.
Document uses legible font sizes — 99.02% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
SHOW DETAILS
.plugin, .plugin button, .plugin input, .plugin label, .plugin select, .plugin td, .plugin textarea
0.98%
11px
SHOW DETAILS
99.02%
≥ 12px
Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
21

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of esu.vn. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of esu.vn on mobile screens.
Contains some content when JavaScript is not available
Apps should display alternative content for when JavaScript is disabled.

Fast and reliable

Page load is not fast enough on mobile networks — Interactive at 13.3 s
Ensure that the page loads fast enough over a cellular network, to ensure good mobile user experience.
Current page does not respond with a 200 when offline
In order for Progressive Web Apps to be made available offline, ensure that the app is using a service worker.
`start_url` does not respond with a 200 when offline
Consider using a service worker for Progressive Web Apps to ensure greater reliability for the user, in the case of poor network conditions.

Installable

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://esu.vn/
http://fonts.googleapis.com/css?family=Open+Sans:400,600,700
Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Web app manifest does not meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
View Data

PWA Optimized

Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 103.1.236.14
Continent: Asia
Country: Vietnam
Vietnam Flag
Region:
City:
Longitude: 105.9999
Latitude: 16.0023
Currencies: VND
Languages: Vietnamese

Web Hosting Provider

Name IP Address
Super Online Data Co., Ltd
Registration

Domain Registrant

Private Registration: No
Name:
Organization:
Country:
City:
State:
Post Code:
Email:
Phone:
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating:
WOT Trustworthiness:
WOT Child Safety:
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: esu.vn
Issued By: Let's Encrypt Authority X3
Valid From: 28th June, 2020
Valid To: 26th September, 2020
Subject: CN = esu.vn
Hash: 23bfcd97
Issuer: CN = Let's Encrypt Authority X3
O = Let's Encrypt
S = US
Version: 2
Serial Number: 0x03D14CBD41EB8192E728133B5218D1087C22
Serial Number (Hex): 03D14CBD41EB8192E728133B5218D1087C22
Valid From: 28th June, 2024
Valid To: 26th September, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:A8:4A:6A:63:04:7D:DD:BA:E6:D1:39:B7:A6:45:65:EF:F3:A8:EC:A1
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
Certificate Policies: Policy: 2.23.140.1.2.1
Policy: 1.3.6.1.4.1.44947.1.1.1
CPS: http://cps.letsencrypt.org
Authority Information Access: OCSP - URI:http://ocsp.int-x3.letsencrypt.org
CA Issuers - URI:http://cert.int-x3.letsencrypt.org/
SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 5E:A7:73:F9:DF:56:C0:E7:B5:36:48:7D:D0:49:E0:32:
7A:91:9A:0C:84:A1:12:12:84:18:75:96:81:71:45:58
Timestamp : Jun 28 04:20:50.604 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:2C:C4:8F:EB:2B:C7:13:F9:BE:8B:9C:F0:
71:D1:60:00:0A:99:9F:C3:09:01:67:E3:FA:A1:05:CB:
8A:A0:CE:F0:02:21:00:D3:22:F8:6D:3F:24:04:E7:50:
04:A6:A8:21:CF:CF:EC:3D:E5:68:3F:F0:D9:75:2A:0E:
C9:38:16:AC:DA:85:71
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : B2:1E:05:CC:8B:A2:CD:8A:20:4E:87:66:F9:2B:B9:8A:
25:20:67:6B:DA:FA:70:E7:B2:49:53:2D:EF:8B:90:5E
Timestamp : Jun 28 04:20:50.637 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:8D:C1:48:6F:33:57:F0:87:4F:8B:35:
13:C2:CA:59:4E:A0:C9:07:57:9C:1D:6A:05:AC:0F:4C:
7F:EB:1F:DF:3D:02:21:00:C9:2F:B8:06:08:8A:5A:9A:
14:9C:07:5C:9A:C7:24:E9:47:D0:D4:3B:CC:9D:77:F7:
15:30:3C:4C:E3:56:D6:64
Key Usage: Digital Signature, Key Encipherment
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:gowhere.vn
DNS:gowherevn.com
DNS:tedu.edu.vn
DNS:trungtambuonban.com
DNS:vnedu-connect.vnpttiengiang.vn
DNS:www.esu.vn
DNS:www.gowhere.vn
DNS:www.tedu.edu.vn
DNS:esu.vn
Technical

DNS Lookup

A Records

Host IP Address Class TTL
esu.vn. 103.1.236.14 IN 359

NS Records

Host Nameserver Class TTL
esu.vn. dns1.hnvietnam.vn. IN 359
esu.vn. dns2.hnvietnam.vn. IN 359

SOA Records

Domain Name Primary NS Responsible Email TTL
esu.vn. dns1.hnvietnam.vn. dns-system.hnvietnam.vn. 359

HTTP Response Headers

HTTP-Code: HTTP/1.1 200 OK
Date: 19th July, 2020
Server: Apache/2
Cache-Control: no-cache, private
Content-Type: text/html; charset=UTF-8
X-Powered-By: PHP/7.3.19
Set-Cookie: *
Vary: User-Agent

Whois Lookup

Created:
Changed:
Expires:
Status:
Nameservers:
Full Whois: esu.vn domain is not supported
View Raw Whois

Nameservers

Related

Subdomains

Similar Sites

Organic Search (US) Competitors

Backlink Competitors

Sites with the same domain name

Domain Valuation Snoop Score
esu.edu
$4,592 USD 2/5
esu.eu
$8,146 USD 2/5
esu.lt
0/5
esu.org
$1,033 USD 1/5
esu.org.ar
0/5

Sites hosted on the same IP address

Domain Valuation Snoop Score
gowhere.vn
$738 USD 1/5
khonggianchauau.net
0/5
tedu.edu.vn
$823 USD 1/5
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