Website review cern.ch
Generated on February 21 2026 04:56 AM
Old data? UPDATE !
The score is 62/100
SEO Content
Title
Home | CERN
Length : 11
Perfect, your title contains between 10 and 70 characters.
Description
CERN, the European Organization for Nuclear Research, is one of the world’s largest and most respected centres for scientific research. Its business is fundamental physics, finding out what the Universe is made of and how it works.
Length : 231
Ideally, your meta description should contain between 70 and 160 characters (spaces included). Use this free tool to calculate text length.
Keywords
physics, CERN, Large Hadron Collider, LHC, high-energy physics, particles, science
Good, your page contains meta keywords.
Og Meta Properties
This page does not take advantage of Og Properties. This tags allows social crawler's better structurize your page. Use this free og properties generator to create them.
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 6 | 5 | 36 | 0 | 0 | 0 |
- [H1] CERN Accelerating science
- [H1] Featured resources
- [H1] Latest News
- [H1] Explore CERN
- [H1] Upcoming events
- [H1] Key Achievements
- [H2] CERN
- [H2] Science
- [H2] Find us
- [H2] CERN & You
- [H2] General Information
- [H3] Heating homes with the world’s largest partic...
- [H3] Private donors pledge 860 million euros for C...
- [H3] The European Strategy for Particle Physics re...
- [H3] ALICE solves mystery of light-nuclei survival
- [H3] CERN Courier Sep/Oct 2025
- [H3] High-Luminosity LHC images
- [H3] LHC Facts and Figures
- [H3] Machine learning to reveal more about LHC par...
- [H3] Love is in the air at CERN’s HEARTS facility
- [H3] Celebrating Women in Science Day 2026 at CERN...
- [H3] Antonino Zichichi (1929 – 2026)
- [H3] Groundbreaking CMS calorimeter for the High-L...
- [H3] Heating homes with the world’s largest partic...
- [H3] European labs get aligned at CERN
- [H3] Probing asteroids with particle beams
- [H3] What can you do with 380 million Higgs bosons...
- [H3] Plan your CERN visit
- [H3] Take an immersive tour of CERN's accelerators...
- [H3] Explore CERN's educational resources
- [H3] CERN and the environment
- [H3] Technology from CERN to society
- [H3] Combined measurements and interpretations of Higgs boson production...
- [H3] Talk by Adolfo Holguin
- [H3] GenHET Meeting in Beyond the Standard Model
- [H3] Quantum sensing for axion dark matter detection
- [H3] Dynamically generated tilt of isocurvature fluctuations
- [H3] No BSM Forum (GenHET workshop)
- [H3] A physics community where everyone can thrive? Why is this importan...
- [H3] Towards a Future Flagship Collider at CERN — The European Strategy ...
- [H3] HOPE Networking Event
- [H3] The Higgs boson
- [H3] The Large Hadron Collider
- [H3] Antimatter
- [H3] The birth of the Web
- [H3] W and Z bosons
- [H3] Neutral currents
Images
We found 8 images on this web page.
Good, most or all of your images have alt attributes.
Text/HTML Ratio
Ratio : 39%
Ideal! This page's ratio of text to HTML code is between 25 and 70 percent.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Great, there are no Iframes detected on this page.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 139 links including 9 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Skip to main content | Internal | Passing Juice |
| Sign in | External | Passing Juice |
| Directory | Internal | Passing Juice |
| Know more | Internal | Passing Juice |
| Who we are | Internal | Passing Juice |
| Our Mission | Internal | Passing Juice |
| Our Governance | Internal | Passing Juice |
| Our Member States | Internal | Passing Juice |
| Our History | Internal | Passing Juice |
| Our People | Internal | Passing Juice |
| What we do | Internal | Passing Juice |
| Fundamental research | Internal | Passing Juice |
| Contribute to society | Internal | Passing Juice |
| Environmentally responsible research | Internal | Passing Juice |
| Bring nations together | Internal | Passing Juice |
| Inspire and educate | Internal | Passing Juice |
| Fast facts and FAQs | Internal | Passing Juice |
| Key Achievements | Internal | Passing Juice |
| The Higgs Boson | Internal | Passing Juice |
| The W boson | Internal | Passing Juice |
| The Z boson | Internal | Passing Juice |
| The Large Hadron Collider | Internal | Passing Juice |
| The Birth of the web | Internal | Passing Juice |
| Antimatter | Internal | Passing Juice |
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| Latest news | Internal | Passing Juice |
| Accelerators | Internal | Passing Juice |
| At CERN | Internal | Passing Juice |
| Computing | Internal | Passing Juice |
| Engineering | Internal | Passing Juice |
| Experiments | Internal | Passing Juice |
| Knowledge sharing | Internal | Passing Juice |
| Physics | Internal | Passing Juice |
| Events | Internal | Passing Juice |
| CERN Community | Internal | Passing Juice |
| News and announcements | Internal | Passing Juice |
| Official communications | Internal | Passing Juice |
| Events | Internal | Passing Juice |
| Scientists | Internal | Passing Juice |
| News | Internal | Passing Juice |
| Press Room | Internal | Passing Juice |
| Media News | Internal | Passing Juice |
| Resources | Internal | Passing Juice |
| Contact | Internal | Passing Juice |
| Know more | Internal | Passing Juice |
| Physics | Internal | Passing Juice |
| Dark matter | Internal | Passing Juice |
| The early universe | Internal | Passing Juice |
| The Standard Model | Internal | Passing Juice |
| Accelerators | Internal | Passing Juice |
| CERN's accelerators | Internal | Passing Juice |
| The Antiproton Decelerator | Internal | Passing Juice |
| High-Luminosity LHC | Internal | Passing Juice |
| Engineering | Internal | Passing Juice |
| Accelerating: radiofrequency cavities | Internal | Passing Juice |
| Steering and focusing: magnets and superconductivity | Internal | Passing Juice |
| Circulating: ultra-high vacuum | Internal | Passing Juice |
| Cooling: cryogenic systems | Internal | Passing Juice |
| Powering: energy at CERN | Internal | Passing Juice |
| Computing | Internal | Passing Juice |
| The CERN Data Centre | Internal | Passing Juice |
| The Worldwide LHC Computing Grid | Internal | Passing Juice |
| CERN openlab | Internal | Passing Juice |
| Open source for open science | Internal | Passing Juice |
| Experiments | Internal | Passing Juice |
| ALICE | Internal | Passing Juice |
| ATLAS | Internal | Passing Juice |
| CMS | Internal | Passing Juice |
| LHCb | Internal | Passing Juice |
| - | Internal | Passing Juice |
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| See all resources | Internal | Passing Juice |
| Accelerators | Internal | Passing Juice |
| At CERN | Internal | Passing Juice |
| Computing | Internal | Passing Juice |
| Engineering | Internal | Passing Juice |
| Experiments | Internal | Passing Juice |
| Knowledge sharing | Internal | Passing Juice |
| Physics | Internal | Passing Juice |
| 360 image | Internal | Passing Juice |
| Annual report | Internal | Passing Juice |
| Brochure | Internal | Passing Juice |
| Bulletin | Internal | Passing Juice |
| Courier | Internal | Passing Juice |
| Image | Internal | Passing Juice |
| Video | Internal | Passing Juice |
| CERN community | Internal | Passing Juice |
| Educators | Internal | Passing Juice |
| General public | Internal | Passing Juice |
| Industry | Internal | Passing Juice |
| Media | Internal | Passing Juice |
| Scientists | Internal | Passing Juice |
| Students | Internal | Passing Juice |
| search | Internal | Passing Juice |
| en | Internal | Passing Juice |
| fr | Internal | Passing Juice |
| Read more → | Internal | Passing Juice |
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| More Social Media Accounts | External | Passing Juice |
| Contact us | Internal | Passing Juice |
| Getting here | Internal | Passing Juice |
| Doing business with CERN | Internal | Passing Juice |
| Knowledge transfer | Internal | Passing Juice |
| CERN's neighbours | Internal | Passing Juice |
| CERN & Society Foundation | External | Passing Juice |
| Partnerships | Internal | Passing Juice |
| Alumni | External | Passing Juice |
| Careers | External | Passing Juice |
| Visits and public events | External | Passing Juice |
| Privacy policy | Internal | Passing Juice |
| Cookie Management | Internal | Passing Juice |
| Copyright | Internal | Passing Juice |
SEO Keywords
Keywords Cloud
event news more lhc science cern europezurich physics accelerators feb
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| cern | 38 |  |
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| news | 19 |  |
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| more | 16 | |
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| physics | 10 | |
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| event | 10 | |
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Usability
Url
Domain : cern.ch
Length : 7
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Excellent, your website doesn't use nested tables. |
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Too bad, your website is using inline styles. |
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Too bad, your website has too many CSS files (more than 4). |
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Too bad, your website has too many JS files (more than 6). |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Missing
Your website does not have an XML sitemap - this can be problematic.
A sitemap lists URLs that are available for crawling and can include additional information like your site's latest updates, frequency of changes and importance of the URLs. This allows search engines to crawl the site more intelligently.
Robots.txt
http://cern.ch/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.
PageSpeed Insights
Device
Categories
Website-SEO-Überprüfung
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