esrf.fr
European Synchrotron Radiation Facility (ESRF)
Last scanned Aug 3, 2026, 9:00 PM · 8 views
Overall score
Great
Summary
SEO is fair (65/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.
Top issues to fix
9 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.
+3 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
566 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-2 overall since Jul 26, 2026
- Overall
- 83
- SEO
- 65
- Security
- 75
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
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
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
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
- 48
- 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
87 internal · 15 external · 1 broken
Images
4 total · 0 missing alt
Scripts / Styles
10 scripts · 5 stylesheets
JS / CSS size
1022 B · 3.5 KB
Page size
32.2 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Multiple H1 headings found
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://esrf.fr
- Final URL
- https://www.esrf.fr/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 566 ms
- HTML size
- 32.2 KB
- Redirect chain
- https://esrf.fr → https://www.esrf.fr/
See something wrong on this report? Request a correction
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?
- Hosting provider information for esrf.fr is not available yet.
- What is esrf.fr's SEO score?
- esrf.fr scored 65/100 for SEO in the latest analysis (fair).
- What is esrf.fr's overall website score?
- esrf.fr has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
- Has esrf.fr's score changed over time?
- esrf.fr's overall score has declined by 2 points (from 85 to 83) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card