cerema.fr

https://cerema.fr· First analyzed 26 Apr 2026· Updated 26 Apr 2026

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cerema.fr

Mobile

Sponsored

Hosting Provider

Gandi

gandi.net

IP Address

217.70.184.55

Site Location

🇫🇷 Francevia tld

Server Location

🇫🇷 Paris, France

ASN

AS29169

Organization

Gandi France L/B Services

Server

Apache

Nameservers

ns-22-b.gandi.net.ns-101-a.gandi.net.ns-110-c.gandi.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.3 s10%

Speed Index

1.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6.3 MB

45 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

8 Technologies Detected

Analytics

Libraries

CSS Frameworks

Icon Libraries

Web Servers

SEO Analysis

C62/100

Meta Tags10/15

Content11/12

Headings3/8

Technical19/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

cerema.frcerema.fr

Cerema, climat et territoires de demain. Aménagement et résilience

Accompagner les territoires dans le défi de l’adaptation au changement climatique en apportant des solutions sur-mesure aussi bien aux collectivités qu’aux m...

Description truncated.

Title Length66 chars

Recommended: 50-60 chars (~401px / 580px)

Description Length232 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

12 URLs

12 sub-sitemaps

robots.txt

59 rules

Local SEO

Local Search Readiness

7/100

Poor

3 13 2

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

Sponsored

AI & LLM Readiness

D41/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

11/25

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

nav

Text ratio:6%

Words:1,580

Token eff.:Optimal

Sections/1K:8.2

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary17w

Descriptive Headingsavg 5.2w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

79/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

13/20

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

Forms & Inputs

15/15

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

9/15

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

ARIA & Roles

7/15

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

3 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.

42/100

652 mg

CO₂e / view

6.3 MB

Page Weight

Cleaner Than

New Visitor

745 mg

Returning (cached)

373 mg

Annual (10K/mo)

78.2 kg

Emission Segments

Data Center

32 mg

Network

192 mg

Device

429 mg

Resource Breakdown

JavaScript

131.1 KB

Images

105.3 KB

CSS

6.0 MB

HTML

32.3 KB

Green Hosting Verified

Gandi

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

No WAF

38d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

06.03.2026

Valid Until

04.06.2026

Subject Alternative Names (1)

www.cerema.fr

SHA-256 Fingerprint

D5:7F:37:CE:84:6C:B1:4B:C7:90:AE:1C:98:81:84:11:F2:F7:32:24...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 1 Hours(max-age=3600, public)

content-encoding

📦 Gzip(gzip)

content-language

content-length

32801

content-type

text/html; charset=UTF-8

date

Fri, 24 Apr 2026 15:04:12 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (6)

cs.relternet-01.developpement-durable.gouv.fr

cs.relternet-02.developpement-durable.gouv.fr

relternet-01.developpement-durable.gouv.fr

relternet-02.developpement-durable.gouv.fr

+2 more

Domain Information

cerema.fr

Domain Age

14 years

Created

05.04.2012

Expires

06.03.2027

Last Updated

25.02.2026

Registrar

GANDI

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.

67/100

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.

Viewport

width=device-width, initial-scale=1.0

Typography & Readability

Marianne + Spectral

WCAG Partial

48/100

Readability

/30

14/30

21px · LH 1.15

Hierarchy

/20

7/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

11/25

2 fonts · 10 req

Heading Font

Marianne

Sans

Body Font

Spectral

Serif21px

Contrast Ratio

1:1

26 issues

Reading Comfort

~33 CPL

Narrow lines

44px

20px

18px

21px

✅ Excellent readability: 21px body text is ideal for all devices.

⚠️ Tight line spacing (1.15). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 26 elements below WCAG AA threshold (min 1.0:1).

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

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

Buy on MyFontsFlesch 0

Color Palette

12 unique colors

7.09:1 AAA Light

#ffffff

Background· 17.8%

#585951

Text· 7.1%

#3b3027

Secondary· 17.6%

#e57b5f

Primary· 9.3%

#1e2118

Secondary· 7.8%

#060804

Primary· 7.5%

#e78b71

Accent· 6.6%

#0e101a

Secondary· 3.7%

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

HotjarMid-Market

Matomo (Piwik)Mid-Market

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)googletagmanager.com(2)google-analytics.com(1)stats.cerema.fr(1)static.hotjar.com(1)

Website Identity

cerema.fr

14 years old

Location detected: 🇫🇷 Francevia tld

GANDIfr

Social Profiles

X (Twitter)LinkedIn

Sponsored

Last analyzed: 26 Apr 2026 at 17:04

Historical Analysis & Change Tracking