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cms.cern

https://cms.cern· First analyzed 24 May 2026· Updated 24 May 2026
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cms.cern
Desktop screenshot of cms.cern
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Mobile

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Hosting Provider

CERN-GPN2

IP Address

188.184.76.146

Site Location

🇨🇭 Switzerlandvia ip

Server Location

🇨🇭 Geneva, Switzerland

ASN

AS513

Server

Nginx

Nameservers

ext-dns-1.cern.ch.ext-dns-2.cern.ch.

Performance

93

Core Web Vitals

Weight

First Contentful Paint
1.3 s10%
Speed Index
1.7 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
6 MB
202 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

10 Technologies Detected

Libraries

2
jQuery
jQuery UI

CSS Frameworks

2
Bootstrap
Tailwind CSS

UI Components

1
Owl Carousel

Other

1
ScrollMagic

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Analytics

1
Matomo

Web Servers

1
Nginx

SEO Analysis

D56/100
17
8
2
Meta Tags7/15
Content8/12
Headings5/8
Technical17/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness2/4
Mobile2/4
Indexability3/3
C
cms.cerncms.cern

The cms detector | CMS Experiment

No description available for this page.

Title Length33 chars

Recommended: 50-60 chars (~208px / 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 (6/9) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

54 rules

Local SEO

Local Search Readiness

5/100
Poor
1 14 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

F35/100
Bot Access
20/25
Machine Read.
5/25
Schema Data
0/25
Citation
10/25

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
navheader/footer
Text ratio:3%
Words:237
Token eff.:Too Short
Sections/1K:16.9
Depth:2/5

Structured Data

RDFa

Citation Readiness

Opening Summary
Descriptive Headingsavg 2w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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
84/100
13
Passed
3
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
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
8/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
27/100
F
755 mg
CO₂e / view
6.0 MB
Page Weight
5%
Cleaner Than
New Visitor
863 mg
vs
Returning (cached)
431 mg
Annual (10K/mo)
90.6 kg
Emission Segments
Data Center
169 mg
Network
181 mg
Device
405 mg
Resource Breakdown
JavaScript
256.6 KB
Images
5.6 MB
CSS
140.5 KB
Fonts
3.4 KB
HTML
8.7 KB
Other
320 B
Green Hosting Not Verified
CERN-GPN2
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

41%Poor
Interactive

HTTPS

No WAF

184d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

05.11.2025

Valid Until

24.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

www.cern.ch*.app.cern.ch*.apptest.cern.ch*.docs.cern.ch*.web.cern.ch*.webtest.cern.chabout.cernaccelerating-news.eu+12 more

SHA-256 Fingerprint

17:0D:6B:78:94:64:BC:C4:3F:F6:0F:D0:0C:82:5B:26:15:2E:11:60...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 60s(max-age=60, public, private)
content-encoding
📦 Gzip(gzip)
content-language
en
content-type
text/html; charset=UTF-8
date
Sun, 24 May 2026 10:23:21 GMT
etag
W/"1779618201"
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

cms.cern

Domain Age
10y 5m

Created

15.12.2015

Expires

15.12.2026

Last Updated

16.12.2025

Registrar

CSC Corporate Domains, Inc.

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.
C
65/100
Mobile Friendly2 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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

arial

WCAG Partial
45/100
Readability
/30
18/30

14px · LH 1.79

Hierarchy
/20
6/20

1.14x ratio

WCAG
/25
11/25

1:1 min contrast

Performance
/25
10/25

System fonts

Heading Font

arial

Sans16px

Body Font

arial

Sans14px

Contrast Ratio

1:1

11 issues

Reading Comfort

Single Font Family

left aligned
16px
h1
30px
h2
48px
h4
14px
p
Major Third
Scale

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Hard to read: Flesch score 38/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 1.0:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

GGoogle FontsFlesch 38

Color Palette

10 unique colors
Dark
#000000
Text· 72.40000000000002%
#65a9cc
Primary· 4%
#6f5c57
Secondary· 3.8%
#280001
Accent· 3.4%
#98d0d8
Secondary· 2.9%
#3c5562
Secondary· 2.5%
#3b1414
Secondary· 1.2%
#87b7c4
Secondary· 1.1%

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

30 Resources

20
Scripts
10
Styles
1
Async
1
Defer

Top Script Sources

local(19)webanalytics.web.cern.ch(1)

Website Identity

cms.cern

10 years old
Location detected: 🇨🇭 Switzerlandvia ip
CSC Corporate Domains, Inc.en

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Last analyzed: 24 May 2026 at 11:27

Historical Analysis & Change Tracking