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vnpy.org screenshot

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 85

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

vnpy.org

Page Load Speed

5.5 sec in total

First Response

794 ms

Resources Loaded

4.4 sec

Page Rendered

312 ms

vnpy.org screenshot

About Website

Welcome to vnpy.org homepage info - get ready to check Vnpy best content for China right away, or after learning these important things about vnpy.org

基于python的开源交易平台开发框架

Visit vnpy.org

Key Findings

We analyzed Vnpy.org page load time and found that the first response time was 794 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

vnpy.org performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

60/100

25%

SI (Speed Index)

Value2.8 s

96/100

10%

TBT (Total Blocking Time)

Value240 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0.099

90/100

15%

TTI (Time to Interactive)

Value3.8 s

90/100

10%

Network Requests Diagram

vnpy.org

794 ms

www.vnpy.org

709 ms

bootstrap.readable.min.css

799 ms

font-awesome.min.css

351 ms

monokai.css

1148 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 81% of them (13 requests) were addressed to the original Vnpy.org, 13% (2 requests) were made to Fonts.gstatic.com and 6% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Vnpy.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 310.6 kB (45%)

Content Size

690.6 kB

After Optimization

380.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vnpy.org main page is 690.6 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. 25% of websites need less resources to load. Images take 391.1 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 190.4 kB

  • Original 241.3 kB
  • After minification 238.7 kB
  • After compression 50.8 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 190.4 kB or 79% of the original size.

Image Optimization

-19%

Potential reduce by 72.7 kB

  • Original 391.1 kB
  • After minification 318.4 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, Vnpy needs image optimization as it can save up to 72.7 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-64%

Potential reduce by 6.9 kB

  • Original 10.7 kB
  • After minification 10.7 kB
  • After compression 3.8 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 6.9 kB or 64% of the original size.

CSS Optimization

-85%

Potential reduce by 40.6 kB

  • Original 47.6 kB
  • After minification 38.9 kB
  • After compression 7.0 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. Vnpy.org needs all CSS files to be minified and compressed as it can save up to 40.6 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (64%)

Requests Now

11

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vnpy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vnpy.org

vnpy.org

794 ms

www.vnpy.org

www.vnpy.org

709 ms

bootstrap.readable.min.css

bootstrap.readable.min.css

799 ms

font-awesome.min.css

font-awesome.min.css

351 ms

monokai.css

monokai.css

1148 ms

style.css

style.css

708 ms

jquery.min.js

jquery.min.js

469 ms

bootstrap.min.js

bootstrap.min.js

398 ms

respond.min.js

respond.min.js

644 ms

bodypadding.js

bodypadding.js

691 ms

favicon.png

favicon.png

697 ms

css

css

123 ms

banner.png

banner.png

1303 ms

JbtMzqLaYbbbCL9X6EvaI73hpw3pgy2gAi-Ip7WPMi0.woff

JbtMzqLaYbbbCL9X6EvaI73hpw3pgy2gAi-Ip7WPMi0.woff

440 ms

cIFypx4yrWPDz3zOxk7hIQLUuEpTyoUstqEm5AMlJo4.woff

cIFypx4yrWPDz3zOxk7hIQLUuEpTyoUstqEm5AMlJo4.woff

484 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1545 ms

Accessibility Review

vnpy.org accessibility score

86

Accessibility Issues

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

Document doesn't have a <title> element

High

<frame> or <iframe> elements do not have a title

Best Practices

vnpy.org best practices score

85

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

vnpy.org SEO score

75

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

Document doesn't have a <title> element

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

    N/A

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vnpy.org 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 Vnpy.org 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

vnpy.org

Open Graph data is detected on the main page of Vnpy. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: