About HTTP Header Inspector
HTTP response headers are crucial pieces of metadata sent by a server to a web browser or client. They communicate critical parameters of the transaction, such as document compression formats, page redirects, caching rules (Cache-Control), content types, and critical browser security flags.
The HTTP Header Inspector parses, audits, and presents these headers inside a rich, readable control panel. Rather than struggling to navigate web inspector tab trees or cURL shell printouts, developers can instantly view the entire redirect journey, trace SSL protocol latency, and verify that important security headers are loaded correctly.
How to Inspect Headers
Enter Target URL
Type or paste the URL of the website or API endpoint you wish to inspect.
Run Header Inspection
Click "Inspect Headers" to fetch and audit the response headers and trace redirects.
Analyze Security & Details
Check the security headers audit, expand redirect hops, and search or filter header values.
Common Use Cases
Debugging Security Policies: Ensure your server returns appropriate security headers to pass security audits and secure users.
Inspecting Caching Behaviors: Check Cache-Control, ETag, and Vary headers to confirm static assets are cached optimally.
Analyzing Redirect Hops: Trace redirection loops or SEO-damaging redirect chains to make sure users land on correct destinations.
Troubleshooting API Responses: Inspect custom headers, content-types, and cookie settings returned by your REST or GraphQL APIs.
Key Features & Capabilities
Security Header Audit
Instantly highlights presence and strength of security headers like CSP, HSTS, and X-Frame-Options.
Redirect Chain Tracking
Traces up to 5 redirect hops (301, 302, etc.), showing the status and headers for each redirect.
Filter & Search Headers
Quickly find specific headers by searching, or narrow down by categories like Cache or Security.
Local Parser Mode
Allows pasting raw HTTP requests or responses to parse and inspect them offline.
Latency & Host Info
Shows connection latency and the resolved IP address for the target domain.
SSRF Protected
Validates target hosts to prevent server-side request forgery, keeping the tool secure.