Tools & Wizards About Us

Report Summary

  • 40

    Performance

    Renders faster than
    60% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

collections.bm-lyon.fr

Page Load Speed

5.4 sec in total

First Response

406 ms

Resources Loaded

4.6 sec

Page Rendered

413 ms

About Website

Welcome to collections.bm-lyon.fr homepage info - get ready to check Collections Bm Lyon best content for France right away, or after learning these important things about collections.bm-lyon.fr

La Bibliothèque municipale de Lyon a entrepris la numérisation de sa collection de journaux lyonnais parus entre 1830 et 1914. En voici déjà quelques 60 000 feuilles, soit 200 titres de 1865 à 1914.

Visit collections.bm-lyon.fr

Key Findings

We analyzed Collections.bm-lyon.fr page load time and found that the first response time was 406 ms and then it took 5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

collections.bm-lyon.fr performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.9 s

0/100

25%

SI (Speed Index)

Value9.9 s

9/100

10%

TBT (Total Blocking Time)

Value220 ms

87/100

30%

CLS (Cumulative Layout Shift)

Value0.123

83/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

Network Requests Diagram

showObject

406 ms

jquery-ui.css

12 ms

foundation.css

101 ms

bibnum.css.php

613 ms

fonts.css

201 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 38% of them (34 requests) were addressed to the original Collections.bm-lyon.fr, 23% (21 requests) were made to Numelyo.bm-lyon.fr and 8% (7 requests) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Collections.bm-lyon.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 781.3 kB (25%)

Content Size

3.2 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Collections.bm-lyon.fr main page is 3.2 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. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 127.4 kB

  • Original 159.4 kB
  • After minification 147.1 kB
  • After compression 32.0 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 127.4 kB or 80% of the original size.

Image Optimization

-1%

Potential reduce by 22.4 kB

  • Original 2.1 MB
  • After minification 2.1 MB

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. Collections Bm Lyon images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 456.1 kB

  • Original 679.4 kB
  • After minification 621.0 kB
  • After compression 223.3 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 456.1 kB or 67% of the original size.

CSS Optimization

-86%

Potential reduce by 175.5 kB

  • Original 203.8 kB
  • After minification 154.0 kB
  • After compression 28.3 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. Collections.bm-lyon.fr needs all CSS files to be minified and compressed as it can save up to 175.5 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 47 (54%)

Requests Now

87

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Collections Bm Lyon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

collections.bm-lyon.fr accessibility score

78

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.

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

Document doesn't have a <title> element

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

collections.bm-lyon.fr best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

collections.bm-lyon.fr 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

Document doesn't have a <title> element

High

Image elements do not have [alt] attributes

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 doesn't use legible font sizes

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Collections.bm-lyon.fr can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it matches the claimed language. Our system also found out that Collections.bm-lyon.fr 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 Collections Bm Lyon. 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: