What is the HTTP Headers Lookup tool?

The HTTP Headers Lookup tool lets you paste raw HTTP request or response headers and instantly view them in a structured table so you can quickly inspect header names, values, caching rules, security directives and more.

How do I use the HTTP Headers Lookup tool?

Copy the raw HTTP headers from your browser, server log or debugging proxy, paste them into the input box and click the Parse HTTP Headers button or press Ctrl plus Enter. The tool will split each line into a header name and value and show them in a clean table layout.

Is my HTTP header data stored when I use this tool?

No, the HTTP Headers Lookup tool parses your headers directly in the browser using client-side JavaScript. The pasted header data is not saved to a database and is only used to render the table on your screen.

Can this HTTP Headers Lookup help with SEO and security?

Yes, viewing headers in a structured table makes it easier to check SEO-related headers such as caching, redirects and canonical behaviour, and to review basic security headers such as HSTS, X-Frame-Options and Content-Security-Policy.

REAL-TIME HEADER PARSER

HTTP Headers Lookup

HTTP Headers Lookup lets you paste raw HTTP response or request headers and instantly convert them into a clean, readable table for quick debugging, SEO audits and security review.

Paste HTTP headers Include the status line if available (e.g. HTTP/1.1 200 OK).

Tip: Press Ctrl + Enter inside the box to parse faster.

🧾 Parsed headers will appear here as a structured table with header names and values.