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21530000.com screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

21530000.com

客貨車電召中心|客貨車電召中心電話|電召客貨車中心|輕型貨車電召中心|高盛客貨車電召中心|尾板貨車電召中心

Page Load Speed

22.8 sec in total

First Response

892 ms

Resources Loaded

21.8 sec

Page Rendered

88 ms

21530000.com screenshot

About Website

Visit 21530000.com now to see the best up-to-date 21530000 content and also check out these interesting facts you probably never knew about 21530000.com

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Key Findings

We analyzed 21530000.com page load time and found that the first response time was 892 ms and then it took 21.9 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. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

21530000.com performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

14/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value4.0 s

88/100

10%

Network Requests Diagram

21530000.com

892 ms

base.css

545 ms

common.css

559 ms

page.css

541 ms

jquery-1.3.2.min.js

555 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 93% of them (38 requests) were addressed to the original 21530000.com, 5% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source S7.addthis.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 50.4 kB (22%)

Content Size

231.9 kB

After Optimization

181.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 21530000.com main page is 231.9 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. Images take 140.0 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 10.1 kB

  • Original 14.0 kB
  • After minification 12.5 kB
  • After compression 3.9 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 1.5 kB, which is 11% 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 10.1 kB or 72% of the original size.

Image Optimization

-6%

Potential reduce by 8.3 kB

  • Original 140.0 kB
  • After minification 131.7 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. 21530000 images are well optimized though.

JavaScript Optimization

-42%

Potential reduce by 31.2 kB

  • Original 74.3 kB
  • After minification 74.3 kB
  • After compression 43.0 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 31.2 kB or 42% of the original size.

CSS Optimization

-21%

Potential reduce by 750 B

  • Original 3.5 kB
  • After minification 3.5 kB
  • After compression 2.8 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. 21530000.com needs all CSS files to be minified and compressed as it can save up to 750 B or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (28%)

Requests Now

39

After Optimization

28

  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21530000. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

21530000.com

21530000.com

892 ms

base.css

base.css

545 ms

common.css

common.css

559 ms

page.css

page.css

541 ms

jquery-1.3.2.min.js

jquery-1.3.2.min.js

555 ms

menu.css

menu.css

541 ms

hoverIntent.js

hoverIntent.js

724 ms

superfish.js

superfish.js

1056 ms

Sidebar.css

Sidebar.css

1109 ms

JQuery.MenuTree.js

JQuery.MenuTree.js

1045 ms

slidemenu.js

slidemenu.js

1079 ms

email-decode.min.js

email-decode.min.js

567 ms

addthis_widget.js

addthis_widget.js

1062 ms

page_top.png

page_top.png

518 ms

logo.gif

logo.gif

521 ms

email.png

email.png

498 ms

phone.png

phone.png

519 ms

fax.png

fax.png

531 ms

menu_bg.png

menu_bg.png

526 ms

menu_l.png

menu_l.png

1009 ms

banner.gif

banner.gif

1021 ms

lg-share-en.gif

lg-share-en.gif

1025 ms

col2-3.gif

col2-3.gif

1018 ms

col2-4.gif

col2-4.gif

1308 ms

col2-bottom.gif

col2-bottom.gif

1314 ms

i-new21530000.jpg

i-new21530000.jpg

2969 ms

col3-img1.gif

col3-img1.gif

1519 ms

col3-img2.gif

col3-img2.gif

2211 ms

col3-img3.gif

col3-img3.gif

1523 ms

core053.js

core053.js

20045 ms

Sidebar_top.png

Sidebar_top.png

1816 ms

Sidebar_bg.png

Sidebar_bg.png

1803 ms

list1.png

list1.png

2000 ms

list2.png

list2.png

1999 ms

Sidebar_bottom.png

Sidebar_bottom.png

2319 ms

faq_bg.png

faq_bg.png

2328 ms

faq_top.png

faq_top.png

2510 ms

faq_back.png

faq_back.png

2499 ms

faq_bottom.png

faq_bottom.png

2706 ms

ga.js

ga.js

14 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

21530000.com accessibility score

80

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

21530000.com best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

21530000.com SEO score

75

Search Engine Optimization Advices

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 21530000.com 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 21530000.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

21530000.com

Open Graph description is not detected on the main page of 21530000. 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: