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century21.fr

https://century21.fr· First analyzed 09 May 2026· Updated 09 May 2026
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century21.fr
Desktop screenshot of century21.fr
Mobile screenshot of century21.fr
Mobile

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Hosting Provider

Ikoula Ripe

IP Address

80.93.93.100

Site Location

🇫🇷 Francevia tld

Server Location

🇫🇷 Cormontreuil, France

ASN

AS21409

Server

Apache

Nameservers

indom30.indomco.fr.indom80.indomco.hk.indom10.indomco.com.indom20.indomco.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
583 ms10%
Speed Index
758 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
796 KB
41 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Framework
Alpine.js
Styling
Tailwind CSS
Infrastructure
Hosting
Ikoula Ripe

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Frameworks

1
Alpine.js

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

C68/100
18
8
1
Meta Tags7/15
Content11/12
Headings8/8
Technical15/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile3/4
Indexability3/3
C
century21.frcentury21.fr

Agences immobilières CENTURY 21 - Immobilier et annonces immobilièr...

Bienvenue chez CENTURY 21, réseau d’agences immobilières qui vous proposent leur expertise que ce soit à la vente, l’achat, la location, la gestion locative ...

Title truncated. Description truncated.
Title Length103 chars

Recommended: 50-60 chars (~618px / 580px)

Description Length448 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (103 chars, ~618px). Will be truncated in search results.

9 issues found

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Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

58 rules

Sitemap reference found

Local SEO

Local Search Readiness

13/100
Poor
4 12 2

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

Sponsored

AI & LLM Readiness

D47/100
Bot Access
20/25
Machine Read.
13/25
Schema Data
0/25
Citation
14/25

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
data-nosnippet

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:7%
Words:1,744
Token eff.:Optimal
Sections/1K:2.9
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary96w
Descriptive Headingsavg 5.4w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
A
85/100
13
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
70/100
B
80 mg
CO₂e / view
795.6 KB
Page Weight
80%
Cleaner Than
New Visitor
92 mg
vs
Returning (cached)
46 mg
Annual (10K/mo)
9.6 kg
Emission Segments
Data Center
4 mg
Network
24 mg
Device
53 mg
Resource Breakdown
JavaScript
96.1 KB
Images
647.3 KB
CSS
30.6 KB
Fonts
981 B
HTML
20.6 KB
Green Hosting Verified
Ikoula
GWF Verified
4 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

21%Critical
Interactive

HTTPS

No WAF

310d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.02.2026

Valid Until

15.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (5)

www.century21.frcentury21.frwww.lesmeilleurstalents.comwww.century21-pro.comc21fr.com

SHA-256 Fingerprint

93:0D:5E:D3:A0:AA:67:80:6E:E5:12:BF:F4:AF:D7:BD:4E:C8:56:0C...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 900s(max-age=900)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Sat, 09 May 2026 09:16:49 GMT
expires
Sat, 09 May 2026 09:24:41 GMT
last-modified
Sat, 09 May 2026 09:09:41 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

c21prod1-cms01.ikoula.biz
century21-fr.mail.protection.outlook.com
century21-fr.mail.eo.outlook.com

Domain Information

century21.fr

Domain Age
29y 2m

Created

11.03.1997

Expires

12.04.2027

Last Updated

13.04.2026

Registrar

CSC CORPORATE DOMAINS INC.

DNSSEC
Not Enabled

Privacy & Compliance

Axeptio

Cookie Consent Banner
Axeptio
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Axeptio

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.
B
77/100
Mobile Friendly14 breakpoints
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, maximum-scale=3.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
70/100
Readability
/30
23/30

16px · LH 1.50

Hierarchy
/20
11/20

0.75x ratio · ✓ H1→H6

WCAG
/25
16/25

1:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Arial

Sans12px

Body Font

Arial

Sans16px

Contrast Ratio

1:1

23 issues

Reading Comfort

~38 CPL

Narrow lines
12px
h1
45px
h2
30px
h3
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 23 elements below WCAG AA threshold (min 1.0:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

GGoogle FontsFlesch 37

Color Palette

12 unique colors
15.96:1 AAA Light
#ffffff
Background· 33.7%
#25211f
Text· 8.2%
#c4b390
Primary· 7.5%
#845e42
Secondary· 7.2%
#171311
Secondary· 6.8%
#0973ad
Accent· 6.5%
#080406
Secondary· 5.9%
#9a7e61
Secondary· 5.9%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

13 Resources

9
Scripts
4
Styles
7
Async
0
Defer

Top Script Sources

googletagmanager.com(5)local(2)static.axept.io(1)chat-window.kmblabs.com(1)

Website Identity

century21.fr

29 years old
Location detected: 🇫🇷 Francevia tld
CSC CORPORATE DOMAINS INC.📧 Microsoft 365fr

Sponsored

Last analyzed: 09 May 2026 at 09:17

Historical Analysis & Change Tracking