Tools & Wizards About Us
km4.jsyst.cn screenshot

Report Summary

  • 97

    Performance

    Renders faster than
    95% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

km4.jsyst.cn

科目四考试_2022驾照考试科目四_科目四安全文明驾驶_驾驶员试题网

Page Load Speed

21.3 sec in total

First Response

3.3 sec

Resources Loaded

17.9 sec

Page Rendered

225 ms

km4.jsyst.cn screenshot

About Website

Click here to check amazing Km 4 Jsyst content for China. Otherwise, check out these important facts you probably never knew about km4.jsyst.cn

驾驶员试题网采用2022年驾照考试科目四最新题库，提供科目四安全文明驾驶常识模拟考试系统以及科目四考试技巧及相关科目四疑问解答。

Visit km4.jsyst.cn

Key Findings

We analyzed Km4.jsyst.cn page load time and found that the first response time was 3.3 sec and then it took 18.1 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

km4.jsyst.cn performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

92/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

Network Requests Diagram

km4.jsyst.cn

3250 ms

style.css

3241 ms

c.js

909 ms

stat.php

1964 ms

logokm4.gif

2566 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 7% of them (2 requests) were addressed to the original Km4.jsyst.cn, 29% (8 requests) were made to Cpro.baidustatic.com and 18% (5 requests) were made to Pos.baidu.com. The less responsive or slowest element that took the longest time to load (10.8 sec) relates to the external source Pos.baidu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 206.6 kB (63%)

Content Size

326.6 kB

After Optimization

120.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Km4.jsyst.cn main page is 326.6 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. Javascripts take 268.5 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 12.3 kB

  • Original 17.2 kB
  • After minification 17.1 kB
  • After compression 4.9 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 12.3 kB or 72% of the original size.

Image Optimization

-9%

Potential reduce by 1.8 kB

  • Original 18.8 kB
  • After minification 17.0 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. Km 4 Jsyst images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 174.1 kB

  • Original 268.5 kB
  • After minification 268.5 kB
  • After compression 94.5 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 174.1 kB or 65% of the original size.

CSS Optimization

-83%

Potential reduce by 18.5 kB

  • Original 22.1 kB
  • After minification 20.6 kB
  • After compression 3.7 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. Km4.jsyst.cn needs all CSS files to be minified and compressed as it can save up to 18.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (31%)

Requests Now

26

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Km 4 Jsyst. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

km4.jsyst.cn

km4.jsyst.cn

3250 ms

style.css

style.css

3241 ms

c.js

c.js

909 ms

stat.php

stat.php

1964 ms

logokm4.gif

logokm4.gif

2566 ms

banleft.gif

banleft.gif

7125 ms

btn.png

btn.png

3325 ms

gckm

gckm

632 ms

world_vehiclesIn.gif

world_vehiclesIn.gif

2565 ms

gckm

gckm

630 ms

stat.htm

stat.htm

162 ms

core.php

core.php

925 ms

gckm

gckm

10802 ms

gckm

gckm

3237 ms

9.gif

9.gif

1437 ms

cpro.js

cpro.js

702 ms

adx.php

adx.php

4135 ms

reduce_bd-logo1_oper.png

reduce_bd-logo1_oper.png

459 ms

adx.php

adx.php

3238 ms

app.gif

app.gif

1402 ms

icon_12px.png

icon_12px.png

452 ms

closefeedback.min.js

closefeedback.min.js

469 ms

reduce_promotion_oper.png

reduce_promotion_oper.png

433 ms

bd_logo.png

bd_logo.png

468 ms

bg_rb.png

bg_rb.png

465 ms

o.htm

o.htm

637 ms

wh.js

wh.js

689 ms

ac.js

ac.js

460 ms

Accessibility Review

km4.jsyst.cn accessibility score

53

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Definition list items are not wrapped in <dl> elements

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

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

Links do not have a discernible name

Best Practices

km4.jsyst.cn best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

km4.jsyst.cn SEO score

75

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Km4.jsyst.cn 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 Km4.jsyst.cn main page’s claimed encoding is gb2312. 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

km4.jsyst.cn

Open Graph description is not detected on the main page of Km 4 Jsyst. 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: