Tools & Wizards About Us
rdflib.org screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

rdflib.org

GitHub - RDFLib/rdflib: RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.

Page Load Speed

2.2 sec in total

First Response

326 ms

Resources Loaded

1.6 sec

Page Rendered

332 ms

rdflib.org screenshot

About Website

Welcome to rdflib.org homepage info - get ready to check RDFLib best content right away, or after learning these important things about rdflib.org

RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information. - RDFLib/rdflib

Visit rdflib.org

Key Findings

We analyzed Rdflib.org page load time and found that the first response time was 326 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

rdflib.org performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value6.7 s

36/100

10%

TBT (Total Blocking Time)

Value1,480 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.5 s

24/100

10%

Network Requests Diagram

rdflib.org

326 ms

rdflib

363 ms

light-3e154969b9f9.css

93 ms

dark-9c5b7a476542.css

96 ms

primer-primitives-4c74e8c7b7a7.css

116 ms

Our browser made a total of 123 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Rdflib.org, 69% (85 requests) were made to Github.githubassets.com and 18% (22 requests) were made to Avatars.githubusercontent.com. The less responsive or slowest element that took the longest time to load (854 ms) relates to the external source Camo.githubusercontent.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 721.0 kB (40%)

Content Size

1.8 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rdflib.org main page is 1.8 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 821.1 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 393.1 kB

  • Original 460.0 kB
  • After minification 449.9 kB
  • After compression 66.9 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 393.1 kB or 85% of the original size.

Image Optimization

-15%

Potential reduce by 12.6 kB

  • Original 85.2 kB
  • After minification 72.6 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, RDFLib needs image optimization as it can save up to 12.6 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 17.3 kB

  • Original 821.1 kB
  • After minification 821.1 kB
  • After compression 803.8 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

-69%

Potential reduce by 298.0 kB

  • Original 431.9 kB
  • After minification 423.9 kB
  • After compression 133.9 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. Rdflib.org needs all CSS files to be minified and compressed as it can save up to 298.0 kB or 69% of the original size.

Requests Breakdown

Number of requests can be reduced by 83 (69%)

Requests Now

121

After Optimization

38

  • Images
  • JavaScript
  • CSS

The browser has sent 121 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RDFLib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 74 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rdflib.org

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rdflib

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Accessibility Review

rdflib.org accessibility score

92

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

rdflib.org 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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

rdflib.org SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Rdflib.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 Rdflib.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

rdflib.org

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