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Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

coveralls.io

Coveralls - Test Coverage History & Statistics

Page Load Speed

1.3 sec in total

First Response

24 ms

Resources Loaded

696 ms

Page Rendered

552 ms

coveralls.io screenshot

About Website

Click here to check amazing Coveralls content for Switzerland. Otherwise, check out these important facts you probably never knew about coveralls.io

Ensure that all your new code is fully covered, and see coverage trends emerge. Works with any CI service. Always free for open source. COVERALLS!

Visit coveralls.io

Key Findings

We analyzed Coveralls.io page load time and found that the first response time was 24 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

coveralls.io performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.2 s

3/100

10%

LCP (Largest Contentful Paint)

Value14.5 s

0/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value1,030 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0.221

56/100

15%

TTI (Time to Interactive)

Value12.6 s

14/100

10%

Network Requests Diagram

coveralls.io

24 ms

coveralls.io

71 ms

gtm.js

85 ms

jquery.payment.min.js

75 ms

62 ms

Our browser made a total of 117 requests to load all elements on the main page. We found that 44% of them (51 requests) were addressed to the original Coveralls.io, 30% (35 requests) were made to S3.amazonaws.com and 9% (11 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (233 ms) belongs to the original domain Coveralls.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 177.0 kB (12%)

Content Size

1.5 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Coveralls.io main page is 1.5 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. 65% of websites need less resources to load. Javascripts take 710.6 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 63.6 kB

  • Original 91.7 kB
  • After minification 91.7 kB
  • After compression 28.1 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. 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 63.6 kB or 69% of the original size.

Image Optimization

-15%

Potential reduce by 105.7 kB

  • Original 692.7 kB
  • After minification 587.0 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, Coveralls needs image optimization as it can save up to 105.7 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

-1%

Potential reduce by 7.7 kB

  • Original 710.6 kB
  • After minification 710.6 kB
  • After compression 702.9 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

-0%

Potential reduce by 31 B

  • Original 13.5 kB
  • After minification 13.5 kB
  • After compression 13.5 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. Coveralls.io has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 49 (69%)

Requests Now

71

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Coveralls. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

coveralls.io

coveralls.io

24 ms

coveralls.io

coveralls.io

71 ms

gtm.js

gtm.js

85 ms

jquery.payment.min.js

jquery.payment.min.js

75 ms

62 ms

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132 ms

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99 ms

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68 ms

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55 ms

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55 ms

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35 ms

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81 ms

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104 ms

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71 ms

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73 ms

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99 ms

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collectedforms.js

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Accessibility Review

coveralls.io accessibility score

65

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

coveralls.io best practices score

75

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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

coveralls.io SEO score

62

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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 Coveralls.io 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 Coveralls.io 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

coveralls.io

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