centenaire.org

https://centenaire.org· First analyzed 15 May 2026· Updated 15 May 2026

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centenaire.org

Mobile

Sponsored

Hosting Provider

O2switch Sarl

IP Address

109.234.165.131

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Clermont-Ferrand, France

ASN

AS50474

Server

o2switch-PowerBoost-v3

Nameservers

ns1.o2switch.net.ns2.o2switch.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

850 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.1 MB

108 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Astrav4.8.1

by Brainstorm Force

View Theme

Technology Stack

19 Technologies Detected

Plugins

Contact Form 7

Kk Star Ratings Translatepress Multilingual

Libraries

Advertising

Google Ads Google AdSense

UI Components

Other

CSS Frameworks

Icon Libraries

Fonts

Analytics

Customer Support

SEO Analysis

B78/100

Meta Tags10/15

Content10/12

Headings8/8

Technical23/25

E-E-A-T2/7

Images4/7

Links2/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

centenaire.orgcentenaire.org

L'expert B2B | Centenaire Magazine

Votre Magazine B2B Retrouvez toute l’actu entrepreneuriale au travers de nos différents articles. Rédigé par une équipe de passionné, le blog centenaire.org ...

Description truncated.

Title Length34 chars

Recommended: 50-60 chars (~204px / 580px)

Description Length391 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (14/27) — critical for accessibility and SEO

8 issues found

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Local SEO

Local Search Readiness

26/100

Needs Work

7 11

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AI & LLM Readiness

D51/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

7/25

Citation

17/25

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

Text ratio:3%

Words:1,094

Token eff.:Optimal

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary23w

Descriptive Headingsavg 7.4w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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.

87/100

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

15/15

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

ARIA & Roles

9/15

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

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

262 mg

CO₂e / view

2.1 MB

Page Weight

50%

Cleaner Than

New Visitor

299 mg

Returning (cached)

150 mg

Annual (10K/mo)

31.4 kg

Emission Segments

Data Center

58 mg

Network

63 mg

Device

140 mg

Resource Breakdown

JavaScript

551.2 KB

Images

337.9 KB

CSS

1.1 MB

Fonts

45.1 KB

HTML

61.6 KB

Other

19.8 KB

Green Hosting Not Verified

O2switch Sarl

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

72d

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

27.04.2026

Valid Until

26.07.2026

Subject Alternative Names (3)

centenaire.orgmail.centenaire.orgwww.centenaire.org

SHA-256 Fingerprint

59:EF:59:ED:AE:9B:B6:20:9F:31:E4:99:25:D1:40:E7:26:50:71:EC...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Fri, 15 May 2026 10:55:47 GMT

link

<https://centenaire.org/fr/wp-json/>; rel="https://api.w.org...

server

o2switch-PowerBoost-v3

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

centenaire.org

Domain Information

centenaire.org

Domain Age

4 years

Created

25.04.2022

Expires

25.04.2027

Last Updated

01.04.2026

Registrar

TurnCommerce, Inc. DBA NameBright.com

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

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.

82/100

Mobile Friendly79 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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto + Alice

WCAG Partial

67/100

Readability

/30

18/30

16px · LH 1.65

Hierarchy

/20

19/20

2.5x ratio · ✓ H1→H6

WCAG

/25

16/25

1:1 min contrast

Performance

/25

14/25

System fonts

Heading Font

Roboto

Sans40px

Body Font

Alice

Sans16px

Contrast Ratio

1:1

7 issues

Reading Comfort

~39 CPL

Narrow lines

40px

24px

16px

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

❌ Very complex text: Flesch score 9/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

GGoogle FontsFlesch 9

Color Palette

8 unique colors

Light

#ffffff

Text· 13%

#b9c8df

Secondary· 39.099999999999994%

#cad9ee

Accent· 19.6%

#405e79

Secondary· 8.6%

#fc156b

Primary· 8%

#8d7f9d

Secondary· 4.3%

#96afc8

Secondary· 4.2%

#52385f

Secondary· 3.4%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

centenaire.org(15)pagead2.googlesyndication.com(2)push-sdk.com(2)googletagmanager.com(1)

Website Identity

Centenaire.org

Organization

Votre magazine B2B

centenaire.org/fr/

4 years old

Location detected: 🇫🇷 Francevia ip

TurnCommerce, Inc. DBA NameBright.comfr-FR

Sponsored

Last analyzed: 15 May 2026 at 10:56

Historical Analysis & Change Tracking