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About HTTP Observatory
The HTTP Observatory, now hosted on MDN, scans a domain and assesses its HTTP headers and other security configuration, including Content Security Policy and HSTS. The report explains problems found and gives actionable recommendations, and you can scan other sites to compare.
Mozilla launched it in 2016, and it has run over 47 million scans for more than 6.9 million websites. It suits developers and site administrators who want a guided review of their security headers backed by MDN documentation.
Strengths
- Checks CSP, HSTS and other security headers
- Actionable recommendations tied to MDN documentation
- Can scan any public site for comparison
- Interface available in many languages
Limitations
- Focuses on headers and configuration, not full vulnerability scanning
- Only works for publicly reachable sites
Details
- Pricing
- FreeFree to use on the MDN website.
- License
- Proprietary
- Developer
- Mozilla
- Platforms
- Web
- How it runs
- Web application
- Works offline
- No
- Best suited for
- Developers reviewing and hardening a site's security headers
- Categories
- Security tools, Website testing
- Last verified
- Added
- Provenance
- Selected from the TechWalrus Resource Hub (Website Checkers & Audit Tools); facts checked against the developer's own pages, 2 sources on file.