Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

idref.fr

IdRef - Identifiants et référentiels pour l'Enseignement supérieur et la Recherche

Page Load Speed

4.8 sec in total

First Response

318 ms

Resources Loaded

4 sec

Page Rendered

530 ms

idref.fr screenshot

About Website

Visit idref.fr now to see the best up-to-date Id Ref content for France and also check out these interesting facts you probably never knew about idref.fr

L’application IdRef permet d’interroger les autorités des bases Calames, Sudoc, STAR, STEP et Thèses.fr, d'enrichir et/ou de corriger des notices autorités existantes, de créer, sur authentification, ...

Visit idref.fr

Key Findings

We analyzed Idref.fr page load time and found that the first response time was 318 ms and then it took 4.5 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

idref.fr performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value2,180 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.298

40/100

15%

TTI (Time to Interactive)

Value13.3 s

12/100

10%

Network Requests Diagram

idref.fr

318 ms

idref.fr

416 ms

www.idref.fr

1015 ms

font-awesome.min.css

265 ms

style.css

244 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 84% of them (53 requests) were addressed to the original Idref.fr, 6% (4 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Idref.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 724.0 kB (74%)

Content Size

981.4 kB

After Optimization

257.4 kB

In fact, the total size of Idref.fr main page is 981.4 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. 55% of websites need less resources to load. Javascripts take 762.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 15.2 kB

  • Original 19.8 kB
  • After minification 16.6 kB
  • After compression 4.6 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 3.2 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 15.2 kB or 77% of the original size.

Image Optimization

-32%

Potential reduce by 54.1 kB

  • Original 166.8 kB
  • After minification 112.7 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, Id Ref needs image optimization as it can save up to 54.1 kB or 32% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-83%

Potential reduce by 631.0 kB

  • Original 762.0 kB
  • After minification 526.7 kB
  • After compression 131.0 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 631.0 kB or 83% of the original size.

CSS Optimization

-72%

Potential reduce by 23.7 kB

  • Original 32.8 kB
  • After minification 25.0 kB
  • After compression 9.1 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. Idref.fr needs all CSS files to be minified and compressed as it can save up to 23.7 kB or 72% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (75%)

Requests Now

53

After Optimization

13

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Id Ref. 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 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

idref.fr accessibility score

64

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

Best Practices

idref.fr 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

idref.fr SEO score

62

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

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

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Idref.fr can be misinterpreted by Google and other search engines. Our service has detected that French 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 Idref.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 Id Ref. 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: