Tools & Wizards About Us
tvtag.tailieu.vn screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 39

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 57

    SEO

    Google-friendlier than
    20% of websites

tvtag.tailieu.vn

Danh mục tài liệu - Thư viện số Thư Viện Tỉnh An Giang

Page Load Speed

5.6 sec in total

First Response

1.3 sec

Resources Loaded

4.1 sec

Page Rendered

250 ms

tvtag.tailieu.vn screenshot

About Website

Welcome to tvtag.tailieu.vn homepage info - get ready to check Tvtag Tailieu best content for Vietnam right away, or after learning these important things about tvtag.tailieu.vn

Hàng ngàn tài liệu, luận văn, bài giảng, giáo trình thuộc danh mục hay và cập nhật - Tại thư viện số Thư Viện Tỉnh An Giang

Visit tvtag.tailieu.vn

Key Findings

We analyzed Tvtag.tailieu.vn page load time and found that the first response time was 1.3 sec and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

tvtag.tailieu.vn performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value7.8 s

23/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

tvtag.tailieu.vn

1301 ms

general.css

827 ms

tp_3col_default.css

834 ms

general_template02.css

836 ms

school.css

840 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Tvtag.tailieu.vn, 66% (42 requests) were made to Static.dlib.vn and 28% (18 requests) were made to Image.dlib.vn. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Static.dlib.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 244.2 kB (43%)

Content Size

564.8 kB

After Optimization

320.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tvtag.tailieu.vn main page is 564.8 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. 30% of websites need less resources to load. Javascripts take 249.4 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 77.0 kB

  • Original 90.0 kB
  • After minification 73.7 kB
  • After compression 12.9 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. This page needs HTML code to be minified as it can gain 16.2 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 77.0 kB or 86% of the original size.

Image Optimization

-1%

Potential reduce by 2.9 kB

  • Original 214.6 kB
  • After minification 211.7 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. Tvtag Tailieu images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 163.9 kB

  • Original 249.4 kB
  • After minification 249.4 kB
  • After compression 85.6 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 163.9 kB or 66% of the original size.

CSS Optimization

-4%

Potential reduce by 399 B

  • Original 10.8 kB
  • After minification 10.8 kB
  • After compression 10.4 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. Tvtag.tailieu.vn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 26 (41%)

Requests Now

63

After Optimization

37

  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tvtag Tailieu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

tvtag.tailieu.vn

tvtag.tailieu.vn

1301 ms

general.css

general.css

827 ms

tp_3col_default.css

tp_3col_default.css

834 ms

general_template02.css

general_template02.css

836 ms

school.css

school.css

840 ms

popup.css

popup.css

838 ms

jquery-1.2.6.js

jquery-1.2.6.js

1114 ms

common.js

common.js

1096 ms

ajax_core.js

ajax_core.js

1108 ms

caobox.js

caobox.js

1109 ms

77607_159.jpg

77607_159.jpg

843 ms

0.gif

0.gif

87 ms

169995_1610.jpg

169995_1610.jpg

830 ms

huong_dan_su_dung_hacao_linux_vi__3126.jpg

huong_dan_su_dung_hacao_linux_vi__3126.jpg

836 ms

1561397234566.jpg

1561397234566.jpg

833 ms

5671397234637.jpg

5671397234637.jpg

835 ms

1641397234635.jpg

1641397234635.jpg

834 ms

6981397234634.jpg

6981397234634.jpg

1101 ms

7561397234632.jpg

7561397234632.jpg

1108 ms

3001397234564.jpg

3001397234564.jpg

1112 ms

4651397234631.jpg

4651397234631.jpg

1111 ms

7251397234629.jpg

7251397234629.jpg

1108 ms

3221397235256.jpg

3221397235256.jpg

1110 ms

9591397235126.jpg

9591397235126.jpg

1372 ms

5591397235190.jpg

5591397235190.jpg

1384 ms

6951397235255.jpg

6951397235255.jpg

1382 ms

tvtag_C01_1363942048.jpg

tvtag_C01_1363942048.jpg

1380 ms

tvtag_C01_1363942245.jpg

tvtag_C01_1363942245.jpg

1387 ms

tvtag_C01_1363942442.jpg

tvtag_C01_1363942442.jpg

1389 ms

banner.jpg

banner.jpg

1372 ms

bg_main_search.gif

bg_main_search.gif

272 ms

icon_01.gif

icon_01.gif

278 ms

btn_tim.gif

btn_tim.gif

278 ms

blank.gif

blank.gif

277 ms

btn_upload.gif

btn_upload.gif

276 ms

new.png

new.png

542 ms

pdf16x16.gif

pdf16x16.gif

553 ms

paginate_pre.gif

paginate_pre.gif

552 ms

paginate_next.gif

paginate_next.gif

555 ms

bg_title_commin.gif

bg_title_commin.gif

554 ms

huongdansudung.png

huongdansudung.png

811 ms

img_tailieu_footer.gif

img_tailieu_footer.gif

835 ms

cdsp_left_menu_item.jpg

cdsp_left_menu_item.jpg

814 ms

arrow3.gif

arrow3.gif

815 ms

img_tailieu.gif

img_tailieu.gif

813 ms

bg_680x230.gif

bg_680x230.gif

1064 ms

btn_next_pre.gif

btn_next_pre.gif

1089 ms

bg_143x173.gif

bg_143x173.gif

1088 ms

bg_title_commin.gif

bg_title_commin.gif

1064 ms

bg_active_300x25.gif

bg_active_300x25.gif

1066 ms

bg_156x24.gif

bg_156x24.gif

1308 ms

icon_search_book.gif

icon_search_book.gif

1338 ms

bg_300x21.gif

bg_300x21.gif

1342 ms

bg_300x21.gif

bg_300x21.gif

1342 ms

bg_arrow_blue_7x4.gif

bg_arrow_blue_7x4.gif

1343 ms

bg_book.gif

bg_book.gif

1577 ms

btn_download.gif

btn_download.gif

1599 ms

source3.jpg

source3.jpg

1613 ms

bg_top_col_right_200.gif

bg_top_col_right_200.gif

1609 ms

bg_bottom_194x3.gif

bg_bottom_194x3.gif

1605 ms

bg_194x30.gif

bg_194x30.gif

1603 ms

bg_bottom_col_right_200.gif

bg_bottom_col_right_200.gif

1835 ms

app.js

app.js

80 ms

19052ddcd06.app.js

19052ddcd06.app.js

48 ms

Accessibility Review

tvtag.tailieu.vn accessibility score

39

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

tvtag.tailieu.vn best practices score

58

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

tvtag.tailieu.vn SEO score

57

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tvtag.tailieu.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Tvtag.tailieu.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

tvtag.tailieu.vn

Open Graph description is not detected on the main page of Tvtag Tailieu. 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: