Tools & Wizards About Us

Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

devpn.com

Devpn 得自由 欢迎您 | Devpn 得自由

Page Load Speed

1.4 sec in total

First Response

206 ms

Resources Loaded

850 ms

Page Rendered

320 ms

About Website

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

Devpn 得自由 致力于建立虚拟专用网络连接方式，加密和认证技术。让用户通过在因特网上建立一个临时的、安全的隧道。穿过混乱的公用网络连接到骨干网络节点上专用的服务器，通过不同的服务商、不同机房，采用智能分组、负载均衡、故障转移保障您的网络稳定快速。稳定运营超3500天，拥有实力的开发团队，安全有保证。

Visit devpn.com

Key Findings

We analyzed Devpn.com page load time and found that the first response time was 206 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

devpn.com performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

93/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value4.2 s

77/100

10%

TBT (Total Blocking Time)

Value690 ms

43/100

30%

CLS (Cumulative Layout Shift)

Value0.297

40/100

15%

TTI (Time to Interactive)

Value7.5 s

48/100

10%

Network Requests Diagram

devpn.com

206 ms

devpn.com

138 ms

i.css

31 ms

i.js

120 ms

network.png

409 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 78% of them (7 requests) were addressed to the original Devpn.com, 22% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (409 ms) belongs to the original domain Devpn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 167.6 kB (66%)

Content Size

254.8 kB

After Optimization

87.3 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Devpn.com main page is 254.8 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. 20% of websites need less resources to load. Javascripts take 205.3 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 5.7 kB

  • Original 9.2 kB
  • After minification 9.2 kB
  • After compression 3.5 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 5.7 kB or 62% of the original size.

JavaScript Optimization

-64%

Potential reduce by 130.8 kB

  • Original 205.3 kB
  • After minification 205.3 kB
  • After compression 74.5 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 130.8 kB or 64% of the original size.

CSS Optimization

-77%

Potential reduce by 31.1 kB

  • Original 40.4 kB
  • After minification 40.4 kB
  • After compression 9.3 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. Devpn.com needs all CSS files to be minified and compressed as it can save up to 31.1 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Devpn. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

devpn.com accessibility score

97

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.

Best Practices

devpn.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

General

Impact

Issue

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

devpn.com SEO score

93

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

    N/A

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Devpn.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) and no language is claimed in <html> or <meta> tags either. Our system also found out that Devpn.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

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