Tools & Wizards About Us
zf.51xjz.com screenshot

Report Summary

  • 69

    Performance

    Renders faster than
    81% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

zf.51xjz.com

域名已过期,无法正常使用

Page Load Speed

59.7 sec in total

First Response

19.8 sec

Resources Loaded

39.3 sec

Page Rendered

608 ms

zf.51xjz.com screenshot

About Website

Click here to check amazing Zf 51 Xjz content. Otherwise, check out these important facts you probably never knew about zf.51xjz.com

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Visit zf.51xjz.com

Key Findings

We analyzed Zf.51xjz.com page load time and found that the first response time was 19.8 sec and then it took 39.9 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 were 34 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

zf.51xjz.com performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

26/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.2 s

86/100

10%

Network Requests Diagram

zf.51xjz.com

19750 ms

js2.js

911 ms

bt.js

997 ms

shijian.js

1207 ms

yuandan_01.jpg

20120 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 78% of them (40 requests) were addressed to the original Zf.51xjz.com, 20% (10 requests) were made to V3.jiathis.com and 2% (1 request) were made to Aaa.6000y.com. The less responsive or slowest element that took the longest time to load (20.5 sec) belongs to the original domain Zf.51xjz.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 115.3 kB (68%)

Content Size

169.8 kB

After Optimization

54.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zf.51xjz.com main page is 169.8 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. 15% of websites need less resources to load. CSS take 48.4 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 39.1 kB

  • Original 47.5 kB
  • After minification 46.8 kB
  • After compression 8.4 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 39.1 kB or 82% of the original size.

Image Optimization

-44%

Potential reduce by 18.8 kB

  • Original 43.0 kB
  • After minification 24.2 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. Obviously, Zf 51 Xjz needs image optimization as it can save up to 18.8 kB or 44% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-47%

Potential reduce by 14.4 kB

  • Original 30.9 kB
  • After minification 30.4 kB
  • After compression 16.6 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 14.4 kB or 47% of the original size.

CSS Optimization

-89%

Potential reduce by 43.1 kB

  • Original 48.4 kB
  • After minification 45.1 kB
  • After compression 5.4 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. Zf.51xjz.com needs all CSS files to be minified and compressed as it can save up to 43.1 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (38%)

Requests Now

16

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zf 51 Xjz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

zf.51xjz.com

zf.51xjz.com

19750 ms

js2.js

js2.js

911 ms

bt.js

bt.js

997 ms

shijian.js

shijian.js

1207 ms

yuandan_01.jpg

yuandan_01.jpg

20120 ms

yuandan_02.jpg

yuandan_02.jpg

10097 ms

yuandan_03.jpg

yuandan_03.jpg

19829 ms

2599702884916783548.gif

2599702884916783548.gif

20119 ms

yuandan_04.jpg

yuandan_04.jpg

20118 ms

yuandan_05.jpg

yuandan_05.jpg

17807 ms

yuandan_06.jpg

yuandan_06.jpg

20119 ms

yuandan_07.jpg

yuandan_07.jpg

20118 ms

yuandan_08.jpg

yuandan_08.jpg

20119 ms

yuandan_09.jpg

yuandan_09.jpg

20118 ms

lh200810501.gif

lh200810501.gif

20118 ms

yuandan_10.jpg

yuandan_10.jpg

19809 ms

yuandan_11.jpg

yuandan_11.jpg

19809 ms

yuandan_12.jpg

yuandan_12.jpg

19809 ms

yuandan_13.jpg

yuandan_13.jpg

19809 ms

yuandan_14.jpg

yuandan_14.jpg

19810 ms

yuandan_15.jpg

yuandan_15.jpg

19810 ms

yuandan_16.jpg

yuandan_16.jpg

19810 ms

yuandan_17.jpg

yuandan_17.jpg

19810 ms

yuandan_18.jpg

yuandan_18.jpg

19810 ms

yuandan_19.jpg

yuandan_19.jpg

19810 ms

yuandan_20.jpg

yuandan_20.jpg

19810 ms

yuandan_21.jpg

yuandan_21.jpg

20462 ms

yuandan_22.jpg

yuandan_22.jpg

20462 ms

yuandan_23.jpg

yuandan_23.jpg

20462 ms

http_imgload.gif

http_imgload.gif

20462 ms

htt22.gif

htt22.gif

20463 ms

yd.gif

yd.gif

19771 ms

yuandan_24.jpg

yuandan_24.jpg

19772 ms

yuandan_25.jpg

yuandan_25.jpg

19772 ms

yuandan_26.jpg

yuandan_26.jpg

19772 ms

yuandan_27.jpg

yuandan_27.jpg

20444 ms

yuandan_28.jpg

yuandan_28.jpg

20444 ms

yuandan_29.jpg

yuandan_29.jpg

20444 ms

1.gif

1.gif

20444 ms

2.gif

2.gif

20022 ms

jiathis_r.js

jiathis_r.js

575 ms

yuandan_30.jpg

yuandan_30.jpg

19547 ms

jiathis_utility.html

jiathis_utility.html

7 ms

jiathis_share.css

jiathis_share.css

12 ms

ckepop.js

ckepop.js

12 ms

ckecenterpop.js

ckecenterpop.js

20 ms

plugin.client.js

plugin.client.js

7 ms

r3.gif

r3.gif

10 ms

img_exit.gif

img_exit.gif

9 ms

img_012.gif

img_012.gif

21 ms

jiathis_ico.png

jiathis_ico.png

18 ms

Accessibility Review

zf.51xjz.com accessibility score

77

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

zf.51xjz.com 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zf.51xjz.com SEO score

69

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    ZH

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zf.51xjz.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Chinese. Our system also found out that Zf.51xjz.com 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

zf.51xjz.com

Open Graph description is not detected on the main page of Zf 51 Xjz. 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: