Tools & Wizards About Us

Report Summary

  • 87

    Performance

    Renders faster than
    90% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

velib.com

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Page Load Speed

1.2 sec in total

First Response

167 ms

Resources Loaded

695 ms

Page Rendered

299 ms

About Website

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Key Findings

We analyzed Velib.com page load time and found that the first response time was 167 ms and then it took 994 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

velib.com performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

68/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

61/100

25%

SI (Speed Index)

Value2.5 s

98/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.5 s

98/100

10%

Network Requests Diagram

velib.com

167 ms

velib.com

352 ms

constants.js

68 ms

pubsub.js

69 ms

global.js

71 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 8% of them (3 requests) were addressed to the original Velib.com, 92% (35 requests) were made to 777slot.soarrunning.com. The less responsive or slowest element that took the longest time to load (352 ms) belongs to the original domain Velib.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 328.1 kB (27%)

Content Size

1.2 MB

After Optimization

886.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Velib.com main page is 1.2 MB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 720.4 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 44.9 kB

  • Original 60.0 kB
  • After minification 58.4 kB
  • After compression 15.2 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 44.9 kB or 75% of the original size.

Image Optimization

-0%

Potential reduce by 194 B

  • Original 720.4 kB
  • After minification 720.3 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. Velib images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 140.7 kB

  • Original 258.0 kB
  • After minification 258.0 kB
  • After compression 117.3 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 140.7 kB or 55% of the original size.

CSS Optimization

-81%

Potential reduce by 142.4 kB

  • Original 176.1 kB
  • After minification 176.1 kB
  • After compression 33.8 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. Velib.com needs all CSS files to be minified and compressed as it can save up to 142.4 kB or 81% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

Accessibility Review

velib.com accessibility score

98

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.

Best Practices

velib.com 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

SEO Factors

velib.com SEO score

98

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