idref.fr

https://idref.fr· First analyzed 01 May 2026· Updated 01 May 2026

Export

idref.fr

Mobile

Sponsored

Hosting Provider

Abes

IP Address

193.52.26.110

Site Location

🇫🇷 Francevia tld

Server Location

🇫🇷 Paris, France

ASN

AS2200

Organization

Abes

Server

Apache

Nameservers

lilas.sudoc.abes.fr.tramontane.abes.fr.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

668 ms10%

Speed Index

868 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

419 KB

60 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Abes

Technology Stack

5 Technologies Detected

Libraries

Icon Libraries

Analytics

Web Servers

CSS Frameworks

SEO Analysis

D45/100

Meta Tags7/15

Content9/12

Headings1/8

Technical10/25

E-E-A-T0/7

Images2/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

idref.fridref.fr

IdRef - Identifiants et référentiels pour l'Enseignement supérieur ...

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 e...

Title truncated. Description truncated.

Title Length82 chars

Recommended: 50-60 chars (~487px / 580px)

Description Length221 chars

Recommended: 120-160 chars

Issues (3)

• Title is too long (82 chars, ~487px). Will be truncated in search results.
• Missing H1 tag — every page should have exactly one H1
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

13 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4,000 URLs

4000 sub-sitemaps

robots.txt

111 rules

Sitemap reference found

Local SEO

Local Search Readiness

0/100

Poor

15 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F33/100

Bot Access

20/25

Machine Read.

9/25

Schema Data

0/25

Citation

4/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

header/footer

Text ratio:10%

Words:393

Token eff.:Optimal

Sections/1K:17.8

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 5.5w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

40/100

Passed

Critical

Warnings

Images & Alt Text

10/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

8/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

0/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

7/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

0/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

6 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

43/100

52 mg

CO₂e / view

418.9 KB

Page Weight

90%

Cleaner Than

New Visitor

59 mg

Returning (cached)

30 mg

Annual (10K/mo)

6.2 kg

Emission Segments

Data Center

12 mg

Network

12 mg

Device

28 mg

Resource Breakdown

JavaScript

210.3 KB

Images

167.7 KB

CSS

21.9 KB

HTML

5.8 KB

Other

13.2 KB

Green Hosting Not Verified

Abes

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

40d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.06.2025

Valid Until

10.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

*.ead-bibliotheque.fread-bibliotheque.fr*.sudoc.abes.frsudoc.abes.fr*.rdafr.frrdafr.fr*.xn--thses-5ra.frxn--thses-5ra.fr+12 more

SHA-256 Fingerprint

A2:71:AD:D5:4A:12:87:0F:9C:A5:55:3F:FA:E2:2D:B2:BF:5E:61:BD...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

access-control-expose-headers

Location

content-encoding

📦 Gzip(gzip)

content-length

5632

content-type

text/html;charset=UTF-8

date

Fri, 01 May 2026 07:20:22 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

lotus.theses.fr

Domain Information

idref.fr

Domain Age

15y 11m

Created

31.05.2010

Expires

31.05.2026

Last Updated

30.06.2025

Registrar

GIP RENATER

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

36/100

Not Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica

WCAG Partial

54/100

Readability

/30

16/30

14px · LH --

Hierarchy

/20

8/20

WCAG

/25

17/25

2.26:1 min contrast

Performance

/25

13/25

2 fonts · 1 req

Heading Font

Helvetica

Sans

Body Font

Helvetica

Sans14px

Contrast Ratio

2.26:1

9 issues

Reading Comfort

Single Font Family

left aligned

18px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

❌ Very complex text: Flesch score 12/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 2.3:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 12

Color Palette

7 unique colors

4.07:1 AA Large Light

#ffffff

Background· 71.40000000000002%

#88798b

Other· 1.5%

#292f51

Primary· 12.499999999999998%

#ab1251

Accent· 2.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

js(11)idref.fr(6)piwik.abes.fr(1)code.jquery.com(1)Parametres(1)

Website Identity

idref.fr

15 years old

Location detected: 🇫🇷 Francevia tld

GIP RENATER

Social Profiles

GitHub

Sponsored

Last analyzed: 01 May 2026 at 07:20

Historical Analysis & Change Tracking