HTTP Observatory (MDN)
HTTP Observatory (formerly Mozilla Observatory) is a free web security scanner that analyzes HTTP response headers and TLS configuration for best practices. · Mozilla · Security
Overview
HTTP Observatory (built by Mozilla, now hosted on MDN) is a free online tool that helps users assess and improve the security of their web applications by analyzing HTTP headers and TLS configuration. It has scanned over 6.9 million websites through 47 million scans. It is ideal for quick checks, educational purposes, and benchmarking security improvements, but is not suitable for private scans.
Good fit
Use when you need a quick, free assessment of your website's HTTP headers and TLS security configuration.
- security audits
- learning
- quick checks
- compliance reviews
Not a fit
Avoid if you require private scans or in-depth vulnerability testing beyond headers and TLS.
- need private results
- need deep vulnerability scanning
Quickstart · 4 steps
- Go to https://observatory.mozilla.org/
- Enter your website URL in the input field.
- Click 'Scan Me' to start the analysis.
- Review the security report and recommendations.