Tools & Wizards About Us
pypi.python.org screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    73% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 95

    SEO

    Google-friendlier than
    91% of websites

pypi.python.org

PyPI · The Python Package Index

Page Load Speed

711 ms in total

First Response

80 ms

Resources Loaded

466 ms

Page Rendered

165 ms

pypi.python.org screenshot

About Website

Visit pypi.python.org now to see the best up-to-date PyPI Python content for China and also check out these interesting facts you probably never knew about pypi.python.org

The Python Package Index (PyPI) is a repository of software for the Python programming language.

Visit pypi.python.org

Key Findings

We analyzed Pypi.python.org page load time and found that the first response time was 80 ms and then it took 631 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

pypi.python.org performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

64/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value2.6 s

97/100

10%

TBT (Total Blocking Time)

Value530 ms

56/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.7 s

46/100

10%

Network Requests Diagram

pypi.python.org

80 ms

pypi

41 ms

screen-switcher-default.css

14 ms

netscape4.css

24 ms

docutils.css

35 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 76% of them (19 requests) were addressed to the original Pypi.python.org, 12% (3 requests) were made to Google-analytics.com and 4% (1 request) were made to Launchpad.net. The less responsive or slowest element that took the longest time to load (324 ms) relates to the external source Launchpad.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 81.0 kB (60%)

Content Size

135.5 kB

After Optimization

54.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Pypi.python.org main page is 135.5 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. 15% of websites need less resources to load. CSS take 75.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 18.4 kB

  • Original 24.1 kB
  • After minification 21.8 kB
  • After compression 5.7 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 18.4 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 157 B

  • Original 14.0 kB
  • After minification 13.8 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. PyPI Python images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 68 B

  • Original 21.9 kB
  • After minification 21.9 kB
  • After compression 21.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-83%

Potential reduce by 62.4 kB

  • Original 75.5 kB
  • After minification 56.6 kB
  • After compression 13.1 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. Pypi.python.org needs all CSS files to be minified and compressed as it can save up to 62.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (70%)

Requests Now

23

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of PyPI Python. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

pypi.python.org

pypi.python.org

80 ms

pypi

pypi

41 ms

screen-switcher-default.css

screen-switcher-default.css

14 ms

netscape4.css

netscape4.css

24 ms

docutils.css

docutils.css

35 ms

pygments.css

pygments.css

35 ms

pypi.css

pypi.css

33 ms

pypi-screen.css

pypi-screen.css

38 ms

launchpad.png

launchpad.png

324 ms

favicon.ico

favicon.ico

32 ms

se-v2.js

se-v2.js

86 ms

python-logo.png

python-logo.png

33 ms

trans.gif

trans.gif

33 ms

styles.css

styles.css

33 ms

analytics.js

analytics.js

45 ms

header-bg2.png

header-bg2.png

17 ms

button-on-bg.png

button-on-bg.png

17 ms

nav-on-bg.png

nav-on-bg.png

9 ms

nav-off-bg.png

nav-off-bg.png

16 ms

bullet.gif

bullet.gif

15 ms

print.css

print.css

10 ms

largestyles.css

largestyles.css

11 ms

defaultfonts.css

defaultfonts.css

17 ms

linkid.js

linkid.js

10 ms

collect

collect

24 ms

Accessibility Review

pypi.python.org accessibility score

100

Accessibility Issues

Best Practices

pypi.python.org best practices score

75

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

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

pypi.python.org SEO score

95

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pypi.python.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Pypi.python.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

pypi.python.org

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