Toolkit

Web Debugging & Security Tools

Start with a full domain overview, then use the focused checkers when you need to inspect one part of the response more closely.

Start here

Domain Check

Start here when you want one report for security headers, SSL, redirects, and DNS.

  • Security headers
  • SSL certificate
  • Redirect path
  • DNS summary

Security

Check the browser protections and trust signals people expect on a production site.

Security Headers Checker

Analyze browser security headers and get practical fix suggestions.

Missing CSP, HSTS, referrer policy, nosniff, or framing protection.SSL Checker

Review certificate issuer, expiry, and validity.

Checking whether HTTPS is healthy before enabling stricter rules.

Web Debugging

Find delivery problems that change how browsers reach or load a page.

HTTP Protocol Checker

Check HTTP/1.1, HTTP/2, and HTTP/3 signals.

Understanding protocol support after CDN or hosting changes.Redirect Checker

Inspect status codes, redirect paths, and final URLs.

Debugging www, HTTPS, trailing slash, and canonical URL issues.Compression Checker

Detect gzip, brotli, and other response encodings.

Confirming Brotli or gzip is active on the final response.

Network

Look up public DNS records that affect routing, email readiness, and basic domain health.

DNS Lookup

Look up A, MX, and TXT records for a public domain.

Checking IP addresses, mail records, SPF, and DMARC signals.

Useful Guides

Short references for choosing what to fix after a tool finds something.

Website Security Check

Use the full checklist for public browser-facing signals.

How To Fix Security Headers

Add safer browser protections in a practical order.

Redirect Chain Checker

Understand redirect chains, canonical URLs, and cleanup steps.