Tools & Wizards About Us

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

tinkhoahoc.com

Tin khoa học, sản phẩm khoa học công nghệ

Page Load Speed

8.2 sec in total

First Response

812 ms

Resources Loaded

7.2 sec

Page Rendered

259 ms

About Website

Click here to check amazing Tin Khoa Hoc content. Otherwise, check out these important facts you probably never knew about tinkhoahoc.com

Mạng thông tin Khoa học công nghệ Việt Nam và thế giới, Sản phẩm công nghệ mới, chuyển giao công nghệ,...

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Key Findings

We analyzed Tinkhoahoc.com page load time and found that the first response time was 812 ms and then it took 7.4 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

tinkhoahoc.com performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

6/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

1/100

25%

SI (Speed Index)

Value11.9 s

4/100

10%

TBT (Total Blocking Time)

Value180 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0.212

59/100

15%

TTI (Time to Interactive)

Value10.2 s

25/100

10%

Network Requests Diagram

tinkhoahoc.com

812 ms

www.tinkhoahoc.com

1447 ms

common.js

543 ms

_jquery-latest.js

1338 ms

_jquery-ui.js

1898 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 41% of them (15 requests) were addressed to the original Tinkhoahoc.com, 57% (21 requests) were made to Tinkhoahoc.jcapt.com and 3% (1 request) were made to Jcapt.com. The less responsive or slowest element that took the longest time to load (3.5 sec) relates to the external source Tinkhoahoc.jcapt.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 393.6 kB (55%)

Content Size

714.7 kB

After Optimization

321.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tinkhoahoc.com main page is 714.7 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. 25% of websites need less resources to load. Javascripts take 390.1 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 40.3 kB

  • Original 51.3 kB
  • After minification 51.1 kB
  • After compression 10.9 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 40.3 kB or 79% of the original size.

Image Optimization

-6%

Potential reduce by 11.5 kB

  • Original 192.7 kB
  • After minification 181.2 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. Tin Khoa Hoc images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 270.1 kB

  • Original 390.1 kB
  • After minification 389.8 kB
  • After compression 120.0 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 270.1 kB or 69% of the original size.

CSS Optimization

-89%

Potential reduce by 71.7 kB

  • Original 80.7 kB
  • After minification 75.6 kB
  • After compression 9.0 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. Tinkhoahoc.com needs all CSS files to be minified and compressed as it can save up to 71.7 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (20%)

Requests Now

35

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tin Khoa Hoc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

tinkhoahoc.com accessibility score

88

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

tinkhoahoc.com 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

SEO Factors

tinkhoahoc.com SEO score

91

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

High

Tap targets are not sized appropriately

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 Tinkhoahoc.com 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 Tinkhoahoc.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 description is not detected on the main page of Tin Khoa Hoc. 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: