Tools & Wizards About Us
thuvienkhoahoc.info screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

thuvienkhoahoc.info

Page Load Speed

11.9 sec in total

First Response

534 ms

Resources Loaded

3.7 sec

Page Rendered

7.6 sec

thuvienkhoahoc.info screenshot

About Website

Click here to check amazing Thuvienkhoahoc content for Vietnam. Otherwise, check out these important facts you probably never knew about thuvienkhoahoc.info

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Key Findings

We analyzed Thuvienkhoahoc.info page load time and found that the first response time was 534 ms and then it took 11.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

thuvienkhoahoc.info performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

48/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

59/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value920 ms

30/100

30%

CLS (Cumulative Layout Shift)

Value0.108

88/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

thuvienkhoahoc.info

534 ms

www.thuvienkhoahoc.info

1595 ms

style.css

515 ms

all.js

33 ms

star2.png

330 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 20% of them (9 requests) were addressed to the original Thuvienkhoahoc.info, 20% (9 requests) were made to Google.com and 13% (6 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Thuvienkhoahoc.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 607.3 kB (63%)

Content Size

969.0 kB

After Optimization

361.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Thuvienkhoahoc.info main page is 969.0 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. 55% of websites need less resources to load. HTML takes 650.1 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 569.2 kB

  • Original 650.1 kB
  • After minification 649.8 kB
  • After compression 80.9 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. 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 569.2 kB or 88% of the original size.

Image Optimization

-4%

Potential reduce by 4.4 kB

  • Original 104.2 kB
  • After minification 99.8 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. Thuvienkhoahoc images are well optimized though.

JavaScript Optimization

-11%

Potential reduce by 21.3 kB

  • Original 198.9 kB
  • After minification 198.6 kB
  • After compression 177.6 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 21.3 kB or 11% of the original size.

CSS Optimization

-79%

Potential reduce by 12.5 kB

  • Original 15.8 kB
  • After minification 12.1 kB
  • After compression 3.4 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. Thuvienkhoahoc.info needs all CSS files to be minified and compressed as it can save up to 12.5 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (66%)

Requests Now

41

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Thuvienkhoahoc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

thuvienkhoahoc.info

thuvienkhoahoc.info

534 ms

www.thuvienkhoahoc.info

www.thuvienkhoahoc.info

1595 ms

style.css

style.css

515 ms

all.js

all.js

33 ms

star2.png

star2.png

330 ms

cse.js

cse.js

32 ms

cse.js

cse.js

106 ms

79 ms

xd_arbiter.php

xd_arbiter.php

31 ms

xd_arbiter.php

xd_arbiter.php

52 ms

jsapi

jsapi

48 ms

default+vi.css

default+vi.css

4 ms

default.css

default.css

36 ms

default+vi.I.js

default+vi.I.js

13 ms

default.css

default.css

29 ms

jquery.min.js

jquery.min.js

40 ms

ads.js

ads.js

250 ms

jquery.min.js

jquery.min.js

55 ms

subs.js

subs.js

268 ms

adsbygoogle.js

adsbygoogle.js

5 ms

advatgiav3.js

advatgiav3.js

802 ms

ca-pub-1776428823259622.js

ca-pub-1776428823259622.js

29 ms

zrt_lookup.html

zrt_lookup.html

35 ms

show_ads_impl.js

show_ads_impl.js

48 ms

ads

ads

288 ms

osd.js

osd.js

3 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

267 ms

colorbox.css

colorbox.css

269 ms

6684881834272372724

6684881834272372724

35 ms

abg.js

abg.js

36 ms

m_js_controller.js

m_js_controller.js

48 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

64 ms

s

s

23 ms

x_button_blue2.png

x_button_blue2.png

25 ms

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

3 ms

ga.js

ga.js

106 ms

async-ads.js

async-ads.js

73 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

40 ms

overlay.png

overlay.png

949 ms

small-logo.png

small-logo.png

32 ms

clear.gif

clear.gif

30 ms

nav_logo114.png

nav_logo114.png

29 ms

__utm.gif

__utm.gif

39 ms

advatgia.php

advatgia.php

292 ms

activeview

activeview

13 ms

Accessibility Review

thuvienkhoahoc.info accessibility score

67

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

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

High

Form elements do not have associated labels

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

Best Practices

thuvienkhoahoc.info 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

thuvienkhoahoc.info SEO score

75

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Thuvienkhoahoc.info 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 Thuvienkhoahoc.info main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

thuvienkhoahoc.info

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