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pd521.com screenshot

Report Summary

  • 73

    Performance

    Renders faster than
    82% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

pd521.com

逆向未来 - Powered by Discuz!

Page Load Speed

8.2 sec in total

First Response

57 ms

Resources Loaded

8 sec

Page Rendered

171 ms

pd521.com screenshot

About Website

Click here to check amazing Pd 521 content for China. Otherwise, check out these important facts you probably never knew about pd521.com

逆向未来技术社区专注于Android安全、IOS安全等移动安全领域，我们会竭尽所能为志同道合的朋友提供一个学习交流的纯净社区！

Visit pd521.com

Key Findings

We analyzed Pd521.com page load time and found that the first response time was 57 ms and then it took 8.1 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

pd521.com performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value3.9 s

53/100

25%

SI (Speed Index)

Value6.5 s

38/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.9 s

89/100

10%

Network Requests Diagram

pd521.com

57 ms

www.pd521.com

965 ms

style_5_common.css

934 ms

style_5_portal_index.css

685 ms

common.js

943 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 97% of them (37 requests) were addressed to the original Pd521.com, 3% (1 request) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Pd521.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 76.3 kB (23%)

Content Size

335.5 kB

After Optimization

259.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Pd521.com main page is 335.5 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 167.0 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 52.2 kB

  • Original 61.4 kB
  • After minification 55.1 kB
  • After compression 9.2 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. 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 52.2 kB or 85% of the original size.

Image Optimization

-8%

Potential reduce by 5.7 kB

  • Original 73.8 kB
  • After minification 68.1 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. Pd 521 images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 12.1 kB

  • Original 167.0 kB
  • After minification 167.0 kB
  • After compression 154.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-19%

Potential reduce by 6.3 kB

  • Original 33.3 kB
  • After minification 33.3 kB
  • After compression 27.0 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. Pd521.com needs all CSS files to be minified and compressed as it can save up to 6.3 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (28%)

Requests Now

36

After Optimization

26

  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pd 521. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

pd521.com

pd521.com

57 ms

www.pd521.com

www.pd521.com

965 ms

style_5_common.css

style_5_common.css

934 ms

style_5_portal_index.css

style_5_portal_index.css

685 ms

common.js

common.js

943 ms

portal.js

portal.js

714 ms

markdown.css

markdown.css

681 ms

filepond.min.css

filepond.min.css

692 ms

filepond.min.js

filepond.min.js

1589 ms

comiis_nv.js

comiis_nv.js

1360 ms

jquery.min.js

jquery.min.js

1809 ms

xmSlide.js

xmSlide.js

1406 ms

adsbygoogle.js

adsbygoogle.js

116 ms

email-decode.min.js

email-decode.min.js

949 ms

nv.png

nv.png

711 ms

nv_a.png

nv_a.png

1105 ms

comiis_mini_logo.png

comiis_mini_logo.png

1137 ms

comiis_dico01.jpg

comiis_dico01.jpg

2455 ms

comiis_dico02.jpg

comiis_dico02.jpg

2511 ms

comiis_dlogo.jpg

comiis_dlogo.jpg

2510 ms

comiis_izbox_listbg.gif

comiis_izbox_listbg.gif

2831 ms

comiis_ftico.gif

comiis_ftico.gif

1919 ms

09_avatar_middle.jpg

09_avatar_middle.jpg

1733 ms

05_avatar_middle.jpg

05_avatar_middle.jpg

1948 ms

79_avatar_middle.jpg

79_avatar_middle.jpg

1890 ms

35_avatar_middle.jpg

35_avatar_middle.jpg

1767 ms

90_avatar_middle.jpg

90_avatar_middle.jpg

1718 ms

noavatar_middle.gif

noavatar_middle.gif

1842 ms

39_avatar_middle.jpg

39_avatar_middle.jpg

2258 ms

05_avatar_middle.jpg

05_avatar_middle.jpg

2912 ms

53_avatar_middle.jpg

53_avatar_middle.jpg

2112 ms

68_avatar_middle.jpg

68_avatar_middle.jpg

2153 ms

18_avatar_middle.jpg

18_avatar_middle.jpg

2303 ms

03_avatar_middle.jpg

03_avatar_middle.jpg

2360 ms

04_avatar_middle.jpg

04_avatar_middle.jpg

2710 ms

56_avatar_middle.jpg

56_avatar_middle.jpg

3099 ms

57_avatar_middle.jpg

57_avatar_middle.jpg

2599 ms

scrolltop.png

scrolltop.png

1906 ms

Accessibility Review

pd521.com accessibility score

66

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

Links do not have a discernible name

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

pd521.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

pd521.com SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

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

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 Pd521.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 Pd521.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

pd521.com

Open Graph description is not detected on the main page of Pd 521. 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: