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esrf.fr

https://esrf.fr· First analyzed 03 May 2026· Updated 03 May 2026
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esrf.fr
Desktop screenshot of esrf.fr
Mobile screenshot of esrf.fr
Mobile

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Hosting Provider

Esrf Grenoble

IP Address

193.49.43.164

Site Location

🇫🇷 Francevia tld

Server Location

🇫🇷 Toulouse, France

ASN

AS2200

Organization

Esrf Grenoble

Nameservers

ns1.diamond.ac.uk.ns.esrf.fr.ext-dns-2.cern.ch.ns0.diamond.ac.uk.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
696 ms10%
Speed Index
905 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
6.6 MB
32 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Esrf Grenoble

Technology Stack

5 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQueryv1.12.4

UI Components

1
Fancybox

Analytics

1
Matomo

SEO Analysis

D56/100
15
8
2
Meta Tags9/15
Content9/12
Headings6/8
Technical15/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile1/4
Indexability3/3
E
esrf.fresrf.fr

European Synchrotron Radiation Facility (ESRF)

No description available for this page.

Title Length46 chars

Recommended: 50-60 chars (~274px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Most images missing alt text (5/5) — critical for accessibility and SEO

10 issues found

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Local SEO

Local Search Readiness

11/100
Poor
4 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

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

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:8%
Words:429
Token eff.:Optimal
Sections/1K:39.6
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary21w
Descriptive Headingsavg 4.5w
Canonical URL
Open Graph2/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
A
80/100
10
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
16/20
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
10/15
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.

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.
24/100
F
841 mg
CO₂e / view
6.6 MB
Page Weight
5%
Cleaner Than
New Visitor
961 mg
vs
Returning (cached)
481 mg
Annual (10K/mo)
100.9 kg
Emission Segments
Data Center
188 mg
Network
202 mg
Device
451 mg
Resource Breakdown
JavaScript
82.8 KB
Images
10.8 KB
CSS
6.5 MB
HTML
7.8 KB
Other
300 B
Green Hosting Not Verified
Esrf Grenoble
5 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

36%Critical
Interactive

HTTPS

No WAF

70d

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+H3

Valid From

13.04.2026

Valid Until

12.07.2026

Subject Alternative Names (4)

esrf.euesrf.frwww.esrf.euwww.esrf.fr

SHA-256 Fingerprint

C9:9F:70:B2:D2:B9:CE:F2:17:71:83:5D:61:09:B8:3D:B2:EB:DA:FF...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=93600
cache-control
🔴 No Cache(max-age=0, no-cache, no-store)
content-encoding
📦 Gzip(gzip)
content-type
text/html;charset=UTF-8
date
Sun, 03 May 2026 03:26:54 GMT
expires
Sun, 03 May 2026 03:26:54 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mta1.epn-campus.eu
mta2.epn-campus.eu

Domain Information

esrf.fr

Domain Age
31y 4m

Created

31.12.1994

Expires

31.12.2026

Last Updated

31.01.2026

Registrar

GIP RENATER

DNSSEC
Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner
Usercentrics
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Usercentrics
Privacy policy page linked

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
56/100
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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Helvetica Neue + ttm-regular

WCAG AA
66/100
Readability
/30
23/30

18px · LH 1.43

Hierarchy
/20
14/20

2x ratio

WCAG
/25
18/25

6.63:1 min contrast

Performance
/25
11/25

System fonts

Heading Font

Helvetica Neue

Sans36px

Body Font

ttm-regular

Sans18px

Contrast Ratio

6.63:1

WCAG AA (≥4.5:1)

Reading Comfort

~80 CPL

Wide lines
36px
h1
28px
h2
28px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

⚠️ Wide lines: ~80 chars/line. Use max-width: 65ch for comfortable reading.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.6:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Color Palette

8 unique colors
Light
#ffffff
Background· 48.2%
#132577
Primary· 22.900000000000002%
#dedcd4
Secondary· 6.9%
#a5919b
Secondary· 6.4%
#b2c4b7
Secondary· 5.5%
#58738f
Secondary· 5.1%
#352679
Accent· 2.7%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Matomo (Piwik)Mid-Market
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

11 Resources

6
Scripts
5
Styles
2
Async
1
Defer

Top Script Sources

app.usercentrics.eu(2)local(2)esrf.fr(1)privacy-proxy.usercentrics.eu(1)

Website Identity

esrf.fr

31 years old
Location detected: 🇫🇷 Francevia tld
GIP RENATERen

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Last analyzed: 03 May 2026 at 03:27

Historical Analysis & Change Tracking