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ens-paris-saclay.fr

https://ens-paris-saclay.fr· First analyzed 02 May 2026· Updated 02 May 2026
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ens-paris-saclay.fr
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Mobile

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Hosting Provider

Super.so
super.so

IP Address

138.231.176.51

Site Location

🇫🇷 Francevia tld

Server Location

🇫🇷 Dammarie-les-Lys, France

ASN

AS2269

Organization

Ecole Normale Superieure de Cachan

Server

Nginx

Nameservers

arianex.ens-paris-saclay.fr.ariane2.ens-paris-saclay.fr.ariane.ens-paris-saclay.fr.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.9 MB
155 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

11 Technologies Detected

Libraries

3
jQuery
jQuery UI
AOS

CSS Frameworks

2
Bootstrap
Tailwind CSS

Meta Frameworks

1
Next.js

UI Components

1
Swiper

Other

1
AOS (Animate On Scroll)

Icon Libraries

1
Font Awesome

Analytics

1
Matomo

Web Servers

1
Nginxv1.18.0

SEO Analysis

C62/100
17
9
1
Meta Tags7/15
Content11/12
Headings3/8
Technical18/25
E-E-A-T3/7
Images3/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
E
ens-paris-saclay.frens-paris-saclay.fr

ENS-PARIS-SACLAY

Grande École de formation aux métiers de la recherche et de l’enseignement supérieur, membre de l'Université Paris-Saclay, située sur le plateau de Saclay. S...

Description truncated.
Title Length16 chars

Recommended: 50-60 chars (~97px / 580px)

Description Length337 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: standard

2,290 URLs

robots.txt

41 rules

Local SEO

Local Search Readiness

19/100
Poor
6 10 2

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

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AI & LLM Readiness

D43/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
12/25

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:1,242
Token eff.:Optimal
Sections/1K:29.8
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary26w
Descriptive Headingsavg 3w
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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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.
B
75/100
12
Passed
4
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
26/100
F
363 mg
CO₂e / view
2.9 MB
Page Weight
30%
Cleaner Than
New Visitor
415 mg
vs
Returning (cached)
207 mg
Annual (10K/mo)
43.5 kg
Emission Segments
Data Center
81 mg
Network
87 mg
Device
195 mg
Resource Breakdown
JavaScript
599.1 KB
Images
1.6 MB
CSS
669.5 KB
HTML
20.7 KB
Green Hosting Not Verified
Super.so
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

46%Poor
Interactive

HTTPS

No WAF

75d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

17.07.2025

Valid Until

17.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

ens-paris-saclay.frwww.ens-paris-saclay.fr

SHA-256 Fingerprint

4F:F4:40:24:E4:98:2E:A1:B8:D8:9C:6C:1A:9F:14:DF:56:1C:8C:D0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 3 Hours(max-age=10800, public, private)
content-encoding
📦 Gzip(gzip)
content-language
fr
content-type
text/html; charset=UTF-8
date
Sat, 02 May 2026 21:22:05 GMT
etag
W/"1777760361"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx1.relay.renater.fr
mx2.relay.renater.fr

Domain Information

ens-paris-saclay.fr

Domain Age
10y 9m

Created

27.07.2015

Expires

27.07.2026

Last Updated

31.08.2025

Registrar

GIP RENATER

DNSSEC
Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner
Cookiebot
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Cookiebot

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.
D
59/100
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

maaxenscmedium + maaxenscregular

WCAG Partial
58/100
Readability
/30
16/30

12px · LH 1.40

Hierarchy
/20
12/20

2.75x ratio

WCAG
/25
17/25

1:1 min contrast

Performance
/25
13/25

2 fonts · 4 req

Heading Font

maaxenscmedium

Sans33px

Body Font

maaxenscregular

Sans12px

Contrast Ratio

1:1

14 issues

Reading Comfort

~46 CPL

Optimal (45–75)
33px
h1
30px
h2
20px
h3
20px
h4
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 11/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 14 elements below WCAG AA threshold (min 1.0:1).

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

Buy on MyFontsFlesch 11

Color Palette

8 unique colors
5.74:1 AA Dark
#666666
Other· 26.7%
#ffffff
Background· 22.3%
#5f3424
Secondary· 15.9%
#0d1f23
Primary· 13%
#402a21
Primary· 9%
#634439
Secondary· 3.2%
#b1cdd2
Secondary· 1.7%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

1
CookiebotMid-Market

Cookie consent and privacy compliance tools

2

Categories

3

Total Tools

0

Enterprise

2

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
1
Async
2
Defer

Top Script Sources

local(19)piwik.ens-paris-saclay.fr(1)

Website Identity

ens-paris-saclay.fr

0181875000
10 years old
Location detected: 🇫🇷 Francevia tld
GIP RENATERfr

Social Profiles

FacebookInstagram

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Last analyzed: 02 May 2026 at 22:17

Historical Analysis & Change Tracking