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crans.org

https://crans.org· First analyzed 24 May 2026· Updated 24 May 2026
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crans.org
Desktop screenshot of crans.org
Mobile screenshot of crans.org
Mobile

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Hosting Provider

Association Crans

IP Address

185.230.79.10

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Gif-sur-Yvette, France

ASN

AS204515

Organization

Association Crans

Server

Nginx

Nameservers

silice.crans.org.sputnik.crans.org.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
336 ms10%
Speed Index
437 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
263 KB
11 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Hugov0.131.0
Infrastructure
Hosting
Association Crans

Technology Stack

2 Technologies Detected

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

D53/100
16
8
1
Meta Tags5/15
Content7/12
Headings8/8
Technical15/25
E-E-A-T0/7
Images1/7
Links2/5
URL5/5
Social3/5
Freshness0/4
Mobile4/4
Indexability3/3
C
crans.orgcrans.org

Accueil - Crans

Le Crans est une l'association réseau de l'ENS Paris-Saclay

Title Length15 chars

Recommended: 50-60 chars (~88px / 580px)

Description Length59 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (4/5) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

1 rules

Allows all crawlers

Local SEO

Local Search Readiness

8/100
Poor
3 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

F34/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
7/25

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:7%
Words:88
Token eff.:Too Short
Sections/1K:60
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 6.3w
Canonical URL
Open Graph2/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
C
63/100
10
Passed
3
Critical
1
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
63/100
A+
33 mg
CO₂e / view
263.4 KB
Page Weight
95%
Cleaner Than
New Visitor
37 mg
vs
Returning (cached)
19 mg
Annual (10K/mo)
3.9 kg
Emission Segments
Data Center
7 mg
Network
8 mg
Device
18 mg
Resource Breakdown
JavaScript
19.3 KB
Images
37.3 KB
CSS
197.5 KB
HTML
3.1 KB
Other
6.1 KB
Green Hosting Not Verified
Association Crans
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

100%Excellent
Static / Informational

HTTPS

No WAF

47d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

11.04.2026

Valid Until

10.07.2026

Subject Alternative Names (6)

*.crans.eu*.crans.fr*.crans.orgcrans.eucrans.frcrans.org

SHA-256 Fingerprint

C7:29:77:E5:1A:98:14:D5:0B:04:84:B6:25:9F:8D:80:44:2C:A8:1E...

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-security-policy
default-src 'none'; connect-src 'self'; font-src 'self'; img...
content-type
text/html
date
Sun, 24 May 2026 11:30:39 GMT
etag
W/"688f8f24-136"
last-modified
Sun, 03 Aug 2025 16:32:36 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

68

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

sputnik.crans.org
redisdead.crans.org

Domain Information

crans.org

Domain Age
25y 9m

Created

10.08.2000

Expires

10.08.2026

Last Updated

24.09.2025

Registrar

OVH sas

DNSSEC
Not Enabled

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.
C
63/100
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

lato

WCAG Partial
67/100
Readability
/30
19/30

15px · LH 1.50

Hierarchy
/20
18/20

2x ratio · ✓ H1→H6

WCAG
/25
17/25

1:1 min contrast

Performance
/25
13/25

1 font · 1 req

Heading Font

lato

Sans30px

Body Font

lato

Sans15px

Contrast Ratio

1:1

6 issues

Reading Comfort

Single Font Family

left aligned
30px
h1
38px
h2
19px
h3
18px
h4
15px
p

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

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

⚠️ Hard to read: Flesch score 34/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 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 2.0x larger than body text.

Buy on MyFontsFlesch 34

Color Palette

5 unique colors
Dark
#1f2525
Secondary· 92.5%
#388eac
Primary· 3%
#354144
Secondary· 2.3%
#7dc9c3
Secondary· 1.1%
#4d2223
Secondary· 1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

4 Resources

2
Scripts
2
Styles
0
Async
0
Defer

Top Script Sources

crans.org(2)

Website Identity

crans.org

contact@crans.org
25 years old
Location detected: 🇫🇷 Francevia ip
OVH sasfr

Social Profiles

FacebookX (Twitter)

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Last analyzed: 24 May 2026 at 11:30

Historical Analysis & Change Tracking