Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

dondusang.net

Accueil | Etablissement francais du sang

Page Load Speed

8.4 sec in total

First Response

1.8 sec

Resources Loaded

6.4 sec

Page Rendered

195 ms

dondusang.net screenshot

About Website

Visit dondusang.net now to see the best up-to-date Don Du Sang content for France and also check out these interesting facts you probably never knew about dondusang.net

Don de sang – Prenez rendez-vous pour donner votre sang, votre plasma ou vos plaquettes partout en France. Rejoignez-nous, devenez donneurs !

Visit dondusang.net

Key Findings

We analyzed Dondusang.net page load time and found that the first response time was 1.8 sec and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

dondusang.net performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value10.6 s

0/100

25%

SI (Speed Index)

Value9.3 s

12/100

10%

TBT (Total Blocking Time)

Value3,450 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.187

65/100

15%

TTI (Time to Interactive)

Value13.5 s

11/100

10%

Network Requests Diagram

dondusang.net

1835 ms

etablissement-francais-du-sang.htm

629 ms

general.css

265 ms

ContentBox.js

257 ms

MainMenu.js

259 ms

Our browser made a total of 124 requests to load all elements on the main page. We found that 63% of them (78 requests) were addressed to the original Dondusang.net, 11% (14 requests) were made to Carte.dondusang.com and 11% (14 requests) were made to Maps.google.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Dondusang.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 921.5 kB (51%)

Content Size

1.8 MB

After Optimization

879.0 kB

In fact, the total size of Dondusang.net 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. 45% of websites need less resources to load. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 28.1 kB

  • Original 35.4 kB
  • After minification 29.6 kB
  • After compression 7.3 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 5.8 kB, which is 16% 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 28.1 kB or 80% of the original size.

Image Optimization

-10%

Potential reduce by 58.1 kB

  • Original 574.2 kB
  • After minification 516.1 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. Don Du Sang images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 714.5 kB

  • Original 1.0 MB
  • After minification 972.3 kB
  • After compression 327.3 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 714.5 kB or 69% of the original size.

CSS Optimization

-81%

Potential reduce by 120.7 kB

  • Original 149.2 kB
  • After minification 117.6 kB
  • After compression 28.4 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. Dondusang.net needs all CSS files to be minified and compressed as it can save up to 120.7 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 79 (71%)

Requests Now

112

After Optimization

33

The browser has sent 112 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Don Du Sang. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 42 to 1 for JavaScripts and from 39 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dondusang.net accessibility score

76

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

[id] attributes on active, focusable elements are not unique

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

dondusang.net best practices score

92

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

Missing source maps for large first-party JavaScript

SEO Factors

dondusang.net SEO score

71

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

High

Page is blocked from indexing

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    FR

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dondusang.net 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 Dondusang.net main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Don Du Sang. 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: