HTTP Request Diff & Compare
Paste two HTTP requests to see highlighted line-by-line differences, a change summary, and a similarity percentage. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
two HTTP requests
Example Output
differing headers/lines
How to Use
- 1Paste the first HTTP requests (A) in the left box and the second (B) in the right box.
- 2Adjust the options if needed (ignore case, whitespace, or empty lines).
- 3Click Compare (or press Ctrl+Enter).
- 4See the highlighted differences, a summary of how many changes there are, and the similarity percentage. Switch between side-by-side / unified / inline views.
About HTTP Request Diff & Compare
HTTP Request Diff & Compare compares two raw HTTP requests (request line + headers) to find differences in method, path, or headers. Useful when debugging why one request succeeds while another fails.
Headers are parsed line by line so meaningful differences show immediately, not buried in formatting.
FAQ
What is the difference between "diff" and "compare"?
Both are done by the same tool. "Diff" highlights the lines/parts that changed (added/removed), while "compare" shows how similar the two inputs are (similarity percentage + summary). You get both at once here.
Is my data sent to a server?
No. The entire comparison is computed in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.