Tools & Wizards About Us
jstween.org screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    77% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

jstween.org

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Page Load Speed

9 sec in total

First Response

703 ms

Resources Loaded

7.9 sec

Page Rendered

368 ms

jstween.org screenshot

About Website

Click here to check amazing Jstween content. Otherwise, check out these important facts you probably never knew about jstween.org

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Visit jstween.org

Key Findings

We analyzed Jstween.org page load time and found that the first response time was 703 ms and then it took 8.3 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

jstween.org performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

73/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

26/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.277

44/100

15%

TTI (Time to Interactive)

Value2.6 s

98/100

10%

Network Requests Diagram

jstween.org

703 ms

www.jstween.org

906 ms

reset.css

215 ms

thems.css

415 ms

responsive.css

418 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 98% of them (41 requests) were addressed to the original Jstween.org, 2% (1 request) were made to Push.zhanzhang.baidu.com. The less responsive or slowest element that took the longest time to load (5.6 sec) belongs to the original domain Jstween.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 123.4 kB (4%)

Content Size

3.2 MB

After Optimization

3.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jstween.org main page is 3.2 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. 15% of websites need less resources to load. Images take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 11.8 kB

  • Original 16.1 kB
  • After minification 13.2 kB
  • After compression 4.2 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 2.9 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 11.8 kB or 74% of the original size.

Image Optimization

-3%

Potential reduce by 97.9 kB

  • Original 3.2 MB
  • After minification 3.1 MB

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. Jstween images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 8.0 kB

  • Original 52.6 kB
  • After minification 52.6 kB
  • After compression 44.6 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 8.0 kB or 15% of the original size.

CSS Optimization

-49%

Potential reduce by 5.7 kB

  • Original 11.6 kB
  • After minification 10.9 kB
  • After compression 5.9 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. Jstween.org needs all CSS files to be minified and compressed as it can save up to 5.7 kB or 49% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (18%)

Requests Now

40

After Optimization

33

  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jstween. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jstween.org

jstween.org

703 ms

www.jstween.org

www.jstween.org

906 ms

reset.css

reset.css

215 ms

thems.css

thems.css

415 ms

responsive.css

responsive.css

418 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

672 ms

js_z.js

js_z.js

446 ms

banner.js

banner.js

466 ms

contact.js

contact.js

440 ms

contact.css

contact.css

619 ms

logo.png

logo.png

320 ms

zcdz.png

zcdz.png

334 ms

dldz.png

dldz.png

336 ms

ptzg.png

ptzg.png

330 ms

1-2001061143454C.png

1-2001061143454C.png

1530 ms

1-2001061144424B.jpg

1-2001061144424B.jpg

1426 ms

1-2001061A430P5.png

1-2001061A430P5.png

1330 ms

1-2001061A50c00.png

1-2001061A50c00.png

1236 ms

1-23022Q15633936.png

1-23022Q15633936.png

3219 ms

4b7c6aac048a68115b0dd96ea5bf16.jpg

4b7c6aac048a68115b0dd96ea5bf16.jpg

761 ms

843c9470a23ad201d3a7ccbe13b43b.jpg

843c9470a23ad201d3a7ccbe13b43b.jpg

3414 ms

8460ce59e9eb610580bc787baf658a.jpg

8460ce59e9eb610580bc787baf658a.jpg

3292 ms

3089c1f6ad0979efdcd8b0d0a210d0.jpg

3089c1f6ad0979efdcd8b0d0a210d0.jpg

4067 ms

23cc16eedcfa94cce24f7462e9d8ab.jpg

23cc16eedcfa94cce24f7462e9d8ab.jpg

5572 ms

d041d06b59b18ccc8d3fc110945e60.jpg

d041d06b59b18ccc8d3fc110945e60.jpg

5620 ms

1-2001061133544N.png

1-2001061133544N.png

3462 ms

1-20010611325H56.png

1-20010611325H56.png

3525 ms

1-200106113225125.png

1-200106113225125.png

3819 ms

1-20010611313K31.png

1-20010611313K31.png

3707 ms

1-20010611302V61.png

1-20010611302V61.png

4208 ms

1-1Z915112346318.png

1-1Z915112346318.png

4060 ms

qq.png

qq.png

4099 ms

weixin.png

weixin.png

4276 ms

push.js

push.js

663 ms

bg_a.jpg

bg_a.jpg

4280 ms

nav_ico.png

nav_ico.png

4560 ms

bg_b.jpg

bg_b.jpg

4417 ms

icon5.png

icon5.png

4728 ms

icon4.png

icon4.png

4500 ms

open_im.png

open_im.png

4006 ms

icon3.png

icon3.png

4086 ms

icon2.png

icon2.png

4148 ms

Accessibility Review

jstween.org accessibility score

73

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

jstween.org 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

jstween.org 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

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jstween.org can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Jstween.org 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

jstween.org

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