Tools & Wizards About Us
chantroisangtao.vn screenshot

Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

chantroisangtao.vn

Sách giáo khoa Chân trời sáng tạo - Bộ sách của Nhà xuất bản Giáo dục Việt Nam

Page Load Speed

8.7 sec in total

First Response

792 ms

Resources Loaded

7.4 sec

Page Rendered

450 ms

chantroisangtao.vn screenshot

About Website

Click here to check amazing Chantroisangtao content for Vietnam. Otherwise, check out these important facts you probably never knew about chantroisangtao.vn

Bộ sách giáo khoa Chân trời sáng tạo hàm chứa ý nghĩa về sự rộng mở của thế giới tri thức, sự vô hạn của kiến thức khoa học và công nghệ; sự bao la của thế giới nghệ thuật và hướng đến những giá trị t...

Visit chantroisangtao.vn

Key Findings

We analyzed Chantroisangtao.vn page load time and found that the first response time was 792 ms and then it took 7.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

chantroisangtao.vn performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value33.4 s

0/100

25%

SI (Speed Index)

Value42.2 s

0/100

10%

TBT (Total Blocking Time)

Value40,480 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.211

59/100

15%

TTI (Time to Interactive)

Value74.1 s

0/100

10%

Network Requests Diagram

chantroisangtao.vn

792 ms

chantroisangtao.vn

1406 ms

wp-emoji-release.min.js

275 ms

style.min.css

537 ms

theme.min.css

782 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 30% of them (26 requests) were addressed to the original Chantroisangtao.vn, 23% (20 requests) were made to Youtube.com and 17% (15 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (3.3 sec) belongs to the original domain Chantroisangtao.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 125.3 kB (8%)

Content Size

1.5 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chantroisangtao.vn main page is 1.5 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only a small number of websites need less resources to load. Javascripts take 585.1 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 110.0 kB

  • Original 134.6 kB
  • After minification 134.5 kB
  • After compression 24.7 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 110.0 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 7.1 kB

  • Original 445.2 kB
  • After minification 438.1 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Chantroisangtao images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 5.7 kB

  • Original 585.1 kB
  • After minification 585.1 kB
  • After compression 579.5 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 2.5 kB

  • Original 309.1 kB
  • After minification 308.7 kB
  • After compression 306.6 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Chantroisangtao.vn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 31 (48%)

Requests Now

65

After Optimization

34

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chantroisangtao. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chantroisangtao.vn

chantroisangtao.vn

792 ms

chantroisangtao.vn

chantroisangtao.vn

1406 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

275 ms

style.min.css

style.min.css

537 ms

theme.min.css

theme.min.css

782 ms

autoptimize_single_8983e25a91f5c9981fb973bdbe189d33.css

autoptimize_single_8983e25a91f5c9981fb973bdbe189d33.css

789 ms

autoptimize_single_8ee02ff766bf41bb59993e9db940e074.css

autoptimize_single_8ee02ff766bf41bb59993e9db940e074.css

800 ms

js_composer.min.css

js_composer.min.css

1327 ms

css

css

57 ms

bootstrap.css

bootstrap.css

1072 ms

autoptimize_single_8b05bca20f9543607286332d290ae019.css

autoptimize_single_8b05bca20f9543607286332d290ae019.css

1083 ms

autoptimize_single_fbd86cb40f96152e1352c148b7cc468e.css

autoptimize_single_fbd86cb40f96152e1352c148b7cc468e.css

1549 ms

autoptimize_single_b861366aabe8d4351e167acb1bee1a51.css

autoptimize_single_b861366aabe8d4351e167acb1bee1a51.css

1303 ms

dynamic_style.css

dynamic_style.css

1061 ms

autoptimize_single_3187f4cb041bc0980af9cda1326a1905.css

autoptimize_single_3187f4cb041bc0980af9cda1326a1905.css

1323 ms

style.css

style.css

1353 ms

jquery.js

jquery.js

1354 ms

js

js

73 ms

sdk.js

sdk.js

42 ms

lazysizes.min.js

lazysizes.min.js

1625 ms

css

css

52 ms

autoptimize_6bb822f32d68d7bdb5f70e4a70d4cefb.js

autoptimize_6bb822f32d68d7bdb5f70e4a70d4cefb.js

3341 ms

slide-1.jpg

slide-1.jpg

1857 ms

slide-2.jpg

slide-2.jpg

1696 ms

sdk.js

sdk.js

52 ms

js

js

85 ms

analytics.js

analytics.js

77 ms

137 ms

collect

collect

85 ms

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212 ms

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330 ms

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330 ms

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329 ms

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327 ms

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326 ms

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325 ms

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1416 ms

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1415 ms

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1146 ms

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1068 ms

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1414 ms

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banner-cat.png

315 ms

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72 ms

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100 ms

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167 ms

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KFOlCnqEu92Fr1MmWUlfBBc9.ttf

167 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVVpcBO5Xk.ttf

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVVpcBO5Xk.ttf

167 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyUypcBO5Xk.ttf

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyUypcBO5Xk.ttf

205 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVspcBO5Xk.ttf

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205 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWAosBO5Xk.ttf

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWAosBO5Xk.ttf

204 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyosBO5Xk.ttf

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205 ms

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202 ms

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200 ms

fa-solid-900.woff

fa-solid-900.woff

1415 ms

fa-regular-400.woff

fa-regular-400.woff

1255 ms

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269 ms

fa-brands-400.woff

fa-brands-400.woff

1494 ms

porto.woff

porto.woff

1414 ms

logo-2.png

logo-2.png

1394 ms

www-player.css

www-player.css

183 ms

www-embed-player.js

www-embed-player.js

248 ms

base.js

base.js

395 ms

www-player.css

www-player.css

639 ms

www-embed-player.js

www-embed-player.js

660 ms

base.js

base.js

663 ms

ad_status.js

ad_status.js

829 ms

id

id

155 ms

QIgJXlTW_ocH5BKR4VvT459F7KnrK51w4wqraUAmDYI.js

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115 ms

embed.js

embed.js

81 ms

Create

Create

514 ms

Create

Create

513 ms

Create

Create

571 ms

Create

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557 ms

Create

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474 ms

Create

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316 ms

Create

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253 ms

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240 ms

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175 ms

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183 ms

Create

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230 ms

Create

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273 ms

Create

Create

351 ms

embed.js

embed.js

60 ms

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48 ms

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99 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

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46 ms

Accessibility Review

chantroisangtao.vn accessibility score

65

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

chantroisangtao.vn best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

chantroisangtao.vn SEO score

82

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    VI

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chantroisangtao.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that Chantroisangtao.vn main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

chantroisangtao.vn

Open Graph data is detected on the main page of Chantroisangtao. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: