HTTP Headers Analyzer

Headers provide metadata such as content type, caching, security, and encoding. The server sends them with each response. The browser uses them for rendering and caching.

Look for Cache-Control, ETag, Last-Modified. max-age sets the cache duration. no-cache means caching with validation. no-store means no caching.

Content-Encoding: gzip or br (Brotli) indicates compression. Brotli is more efficient than gzip. Check with HTTP Headers or HTTP/2 Checker.

Diagnose cache, CORS, and security issues. Check CDN settings. Optimize performance. Debug APIs.

HTTP Headers shows all headers. Security Headers focuses on protection and gives a score. Use both for the full picture.