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Inspect every HTTP response header from any website. See status codes, server software, content types, caching policies, and detect information leakage.
HTTP headers are key-value pairs exchanged between browsers and servers with every request. They control caching, security policies, content type, compression, authentication, and reveal server technology. Proper header hygiene reduces your attack surface.
Headers control security boundaries, caching behavior, and CORS policies. Misconfigured headers expose sites to XSS, data leaks, and cache poisoning.
Leaking Server and X-Powered-By headers, missing Cache-Control on dynamic pages, permissive CORS wildcards, and exposing internal paths in custom headers.
Type the website you want to inspect.
We issue an HTTP GET and capture all response headers.
Headers are parsed, categorized, and checked for leakage.
Remove leaking headers and add missing security directives.
Identifies server software from Server and X-Powered-By headers. Flags known vulnerable versions and recommends obfuscation.
Validates Content-Type, charset, and X-Content-Type-Options. Prevents MIME sniffing attacks that lead to XSS and code execution.
Analyzes Cache-Control, Expires, ETag, and Last-Modified. Recommends optimal caching strategies for static assets vs dynamic content.
Detects headers that expose internal paths, framework versions, backend IPs, or employee names. These aid targeted reconnaissance.
Inspects Set-Cookie headers for Secure, HttpOnly, SameSite, and Partitioned flags. Missing flags enable session hijacking and CSRF.
Counts total response headers and flags unusually large headers that may indicate verbose error responses or proxy misconfigurations.
Automate HTTP header checks, detect when new headers appear or leak information, and get alerted on misconfigurations across all your production sites.