Report Summary

  • 96

    Performance

    Renders faster than
    94% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    65% of websites

  • 88

    SEO

    Google-friendlier than
    71% of websites

clojure.org

Clojure

Page Load Speed

626 ms in total

First Response

47 ms

Resources Loaded

254 ms

Page Rendered

325 ms

clojure.org screenshot

About Website

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

Visit clojure.org

Key Findings

We analyzed Clojure.org page load time and found that the first response time was 47 ms and then it took 579 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

clojure.org performance score

96

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

98/100

25%

SI (Speed Index)

Value1.9 s

100/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.093

91/100

15%

TTI (Time to Interactive)

Value3.1 s

95/100

10%

Network Requests Diagram

clojure.org

47 ms

normalize.css

9 ms

webflow.css

32 ms

clojureorg.webflow.css

27 ms

asciidoctor-mod.css

29 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 73% of them (11 requests) were addressed to the original Clojure.org, 13% (2 requests) were made to Ajax.googleapis.com and 13% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (103 ms) relates to the external source Google-analytics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 212.9 kB (65%)

Content Size

328.2 kB

After Optimization

115.3 kB

In fact, the total size of Clojure.org main page is 328.2 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. 30% of websites need less resources to load. Javascripts take 222.8 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 14.1 kB

  • Original 19.2 kB
  • After minification 17.0 kB
  • After compression 5.1 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. This page needs HTML code to be minified as it can gain 2.2 kB, which is 12% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 14.1 kB or 73% of the original size.

Image Optimization

-36%

Potential reduce by 2.4 kB

  • Original 6.6 kB
  • After minification 4.2 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, Clojure needs image optimization as it can save up to 2.4 kB or 36% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-59%

Potential reduce by 131.5 kB

  • Original 222.8 kB
  • After minification 174.5 kB
  • After compression 91.3 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 131.5 kB or 59% of the original size.

CSS Optimization

-82%

Potential reduce by 64.9 kB

  • Original 79.6 kB
  • After minification 58.5 kB
  • After compression 14.7 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. Clojure.org needs all CSS files to be minified and compressed as it can save up to 64.9 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (62%)

Requests Now

13

After Optimization

5

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clojure. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

clojure.org accessibility score

93

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

clojure.org best practices score

83

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

SEO Factors

clojure.org SEO score

88

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Clojure.org can be misinterpreted by Google and other search engines. Our service has detected that English 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 Clojure.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

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