Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

thuvienhoclieu.com

Download và upload tài liệu học tập, giảng dạy - Thư Viện Học Liệu

Page Load Speed

3.9 sec in total

First Response

33 ms

Resources Loaded

3.1 sec

Page Rendered

727 ms

About Website

Visit thuvienhoclieu.com now to see the best up-to-date Thuvienhoclieu content for Vietnam and also check out these interesting facts you probably never knew about thuvienhoclieu.com

Download và upload tài liệu học tập, giảng dạy chất lượng cao ở cấp THPT và THCS. Các chuyên đề, bài tập, đề thi học kỳ, đề kiểm tra 1 tiết, giáo án.

Visit thuvienhoclieu.com

Key Findings

We analyzed Thuvienhoclieu.com page load time and found that the first response time was 33 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

thuvienhoclieu.com performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

69/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

57/100

25%

SI (Speed Index)

Value5.0 s

64/100

10%

TBT (Total Blocking Time)

Value2,540 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.433

22/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

thuvienhoclieu.com

33 ms

thuvienhoclieu.com

86 ms

embed-public.min.css

56 ms

wpProQuiz_front.min.css

49 ms

orgSeriesLightTheme.css

48 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 82% of them (47 requests) were addressed to the original Thuvienhoclieu.com, 9% (5 requests) were made to Pagead2.googlesyndication.com and 5% (3 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Pagead2.googlesyndication.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 698.0 kB (46%)

Content Size

1.5 MB

After Optimization

816.9 kB

In fact, the total size of Thuvienhoclieu.com 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. 65% of websites need less resources to load. HTML takes 716.1 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 654.4 kB

  • Original 716.1 kB
  • After minification 674.6 kB
  • After compression 61.6 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 654.4 kB or 91% of the original size.

Image Optimization

-11%

Potential reduce by 9.4 kB

  • Original 85.0 kB
  • After minification 75.6 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. Obviously, Thuvienhoclieu needs image optimization as it can save up to 9.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 7.1 kB

  • Original 586.4 kB
  • After minification 586.4 kB
  • After compression 579.3 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

-21%

Potential reduce by 27.0 kB

  • Original 127.5 kB
  • After minification 127.5 kB
  • After compression 100.5 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. Thuvienhoclieu.com needs all CSS files to be minified and compressed as it can save up to 27.0 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 33 (61%)

Requests Now

54

After Optimization

21

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Thuvienhoclieu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

thuvienhoclieu.com accessibility score

95

Accessibility Issues

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.

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

Links do not have a discernible name

Best Practices

thuvienhoclieu.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

thuvienhoclieu.com SEO score

99

Search Engine Optimization Advices

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Thuvienhoclieu.com can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it does not match the claimed English language. Our system also found out that Thuvienhoclieu.com 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

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