esrf.fr
European Synchrotron Radiation Facility (ESRF)
Last scanned Jul 26, 2026, 3:19 PM
Overall score
Great
Summary
This website is hosted on AKAMAI-ASN1 - Akamai International B.V., NL. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on AKAMAI-ASN1 - Akamai International B.V., NL
Top issues to fix
8 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+2 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
810 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- European Synchrotron Radiation Facility (ESRF)
- Description
- Canonical
- https://www.esrf.fr/home.html
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- AKAMAI-ASN1 - Akamai International B.V., NL
- CDN provider
- —
- IP address
- 23.54.81.131
- ASN
- AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- www.esrf.fr
- Valid from
- Jun 22, 2026
- Valid to
- Sep 20, 2026
- Days until expiry
- 56
- SAN domains
- esrf.eu, esrf.fr, www.esrf.eu, www.esrf.fr
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 2 · H2 6 · H3 11
Links
85 internal · 15 external · 1 broken
Images
4 total · 0 missing alt
Scripts / Styles
8 scripts · 5 stylesheets
JS / CSS size
116 KB · 183 B
Page size
31.7 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 18
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Multiple H1 headings found
- No structured data (JSON-LD) found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://esrf.fr
- Final URL
- https://www.esrf.fr/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 810 ms
- HTML size
- 31.7 KB
- Redirect chain
- https://esrf.fr → https://www.esrf.fr/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does esrf.fr use?
- We did not detect any specific technologies for esrf.fr in the latest scan.
- Is esrf.fr secure (HTTPS)?
- Yes. esrf.fr uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 20, 2026.
- Who hosts esrf.fr?
- esrf.fr is hosted on AKAMAI-ASN1 - Akamai International B.V., NL.
- What is esrf.fr's SEO score?
- esrf.fr scored 70/100 for SEO in the latest analysis (fair).
- What is esrf.fr's overall website score?
- esrf.fr has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
- Is esrf.fr hiring?
- esrf.fr has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card