cern.ch has an SEO score of 40/100. Below are the detailed results of 10 critical SEO checks — title, meta description, H1, HTTPS, mobile friendliness, image alt tags, canonical, Open Graph, page size and schema markup.
SEO Check Results
✓
Title TagHome | CERN
Passed
✕
Meta DescriptionNo meta description
Issue
✕
H1 HeadingNo H1 tag
Issue
✓
SSL / HTTPSSite secured with HTTPS
Passed
✓
Mobile FriendlyViewport defined
Passed
!
Image Alt Tags16/45 images missing alt
Improve
✓
Canonical TagCanonical URL defined
Passed
!
Open GraphOpen Graph tags missing
Improve
!
Page Size290 KB - can be optimized
Improve
!
Schema MarkupNo schema markup
Improve
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