Tools & Wizards About Us
tai-lieu.com screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    71% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

tai-lieu.com

Tài liệu - Tai lieu

Page Load Speed

5 sec in total

First Response

575 ms

Resources Loaded

4.2 sec

Page Rendered

250 ms

tai-lieu.com screenshot

About Website

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

Thư viện tài liệu trực tuyến miễn phí dành cho các bạn học sinh, sinh viên.

Visit tai-lieu.com

Key Findings

We analyzed Tai-lieu.com page load time and found that the first response time was 575 ms and then it took 4.4 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

tai-lieu.com performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value7.5 s

26/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.187

65/100

15%

TTI (Time to Interactive)

Value8.1 s

42/100

10%

Network Requests Diagram

tai-lieu.com

575 ms

default.aspx

1152 ms

style.css

723 ms

cse.js

27 ms

de-tai-thuc-trang-xuat-khau-thuy-san-cua-viet-nam_xM1UzzEaFg.jpg

1226 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 32% of them (12 requests) were addressed to the original Tai-lieu.com, 27% (10 requests) were made to S1.tai-lieu.com and 24% (9 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Tai-lieu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 143.2 kB (18%)

Content Size

816.8 kB

After Optimization

673.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tai-lieu.com main page is 816.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 654.5 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 21.6 kB

  • Original 28.8 kB
  • After minification 27.8 kB
  • After compression 7.3 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 21.6 kB or 75% of the original size.

Image Optimization

-10%

Potential reduce by 65.9 kB

  • Original 654.5 kB
  • After minification 588.6 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. Tai Lieu images are well optimized though.

JavaScript Optimization

-32%

Potential reduce by 33.5 kB

  • Original 106.2 kB
  • After minification 105.4 kB
  • After compression 72.6 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 33.5 kB or 32% of the original size.

CSS Optimization

-82%

Potential reduce by 22.3 kB

  • Original 27.3 kB
  • After minification 20.4 kB
  • After compression 5.0 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. Tai-lieu.com needs all CSS files to be minified and compressed as it can save up to 22.3 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (18%)

Requests Now

33

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tai Lieu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

tai-lieu.com

tai-lieu.com

575 ms

default.aspx

default.aspx

1152 ms

style.css

style.css

723 ms

cse.js

cse.js

27 ms

de-tai-thuc-trang-xuat-khau-thuy-san-cua-viet-nam_xM1UzzEaFg.jpg

de-tai-thuc-trang-xuat-khau-thuy-san-cua-viet-nam_xM1UzzEaFg.jpg

1226 ms

de-tai-quan-he-quoc-te-cua-viet-nam-trong-thoi-ky_qugB5aYE2L.jpg

de-tai-quan-he-quoc-te-cua-viet-nam-trong-thoi-ky_qugB5aYE2L.jpg

1234 ms

de-tai-mot-so-bien-phap-nham-day-manh-va-nang-cao_hy6PoiG7n2.jpg

de-tai-mot-so-bien-phap-nham-day-manh-va-nang-cao_hy6PoiG7n2.jpg

1249 ms

de-tai-mot-so-giai-phap-nham-hoan-thien-hoat-dong_W1OIy6OCAp.jpg

de-tai-mot-so-giai-phap-nham-hoan-thien-hoat-dong_W1OIy6OCAp.jpg

1251 ms

de-tai-mot-so-giai-phap-nham-nang-cao-cac-hieu-qua_YRg1lsmZYw.jpg

de-tai-mot-so-giai-phap-nham-nang-cao-cac-hieu-qua_YRg1lsmZYw.jpg

1282 ms

de-tai-co-so-ly-luan-ve-hoat-dong-xuat-nhap-khau_DidRwE1Bpy.jpg

de-tai-co-so-ly-luan-ve-hoat-dong-xuat-nhap-khau_DidRwE1Bpy.jpg

1312 ms

do-an-phan-tich-thiet-ke-he-thong-quan-ly-ho-so-ca_BiKFXOpyHb.jpg

do-an-phan-tich-thiet-ke-he-thong-quan-ly-ho-so-ca_BiKFXOpyHb.jpg

1462 ms

luan-van-thuc-trang-quan-he-thuong-mai-giua-viet-n_KKuHuS33Y4.jpg

luan-van-thuc-trang-quan-he-thuong-mai-giua-viet-n_KKuHuS33Y4.jpg

1476 ms

de-tai-giai-phap-de-thuc-day-hoat-dong-xuat-khau-c_v2dGpXDDxw.jpg

de-tai-giai-phap-de-thuc-day-hoat-dong-xuat-khau-c_v2dGpXDDxw.jpg

1496 ms

do-an-xay-dung-he-thong-quan-ly-ban-hang-cua-cong_bNY73Scp2T.jpg

do-an-xay-dung-he-thong-quan-ly-ban-hang-cua-cong_bNY73Scp2T.jpg

1495 ms

bg.jpg

bg.jpg

2412 ms

menu_bg2.png

menu_bg2.png

301 ms

banner.jpg

banner.jpg

1210 ms

bluearrow.gif

bluearrow.gif

492 ms

doc16x16.gif

doc16x16.gif

495 ms

cse.js

cse.js

48 ms

customscript.js

customscript.js

456 ms

content_shape.gif

content_shape.gif

521 ms

facebook_16x16.gif

facebook_16x16.gif

697 ms

twitter_16x16.gif

twitter_16x16.gif

698 ms

jquery.min.js

jquery.min.js

6 ms

jsapi

jsapi

26 ms

default+vi.css

default+vi.css

3 ms

default.css

default.css

39 ms

default+vi.I.js

default+vi.I.js

12 ms

default.css

default.css

13 ms

analytics.js

analytics.js

19 ms

collect

collect

14 ms

async-ads.js

async-ads.js

31 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

20 ms

small-logo.png

small-logo.png

33 ms

search_box_icon.png

search_box_icon.png

33 ms

clear.png

clear.png

32 ms

Accessibility Review

tai-lieu.com accessibility score

97

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.

Best Practices

tai-lieu.com best practices score

67

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

tai-lieu.com SEO score

92

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

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

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 Tai-lieu.com 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 Tai-lieu.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

tai-lieu.com

Open Graph description is not detected on the main page of Tai Lieu. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: