Frequently Asked Questions
What format should I paste?
Paste raw HTTP headers as one header per line in key:value format.
What does the parser return?
The tool returns normalized header keys and values for easier inspection.
Is parsing local?
Yes. Header parsing runs entirely in-browser.
Example input/output
Input: Content-Type: application/json
Authorization: Bearer token123
X-Request-Id: abc-123
Output: Formatted table of header names and values
How it works
This tool splits the headers block by newlines, parses each line at the first colon to separate the header name from its value, and displays the result. Processing runs in your browser.
Common use cases
- Inspect response headers copied from browser DevTools to debug caching issues
- Parse raw request headers from server access logs
- Verify security headers like CSP and HSTS are correctly set