How to use Response Header Checker
- Type or paste your text into Response Header Checker's input area.
- Set Paste raw HTTP response headers so the output fits your use case.
- Response Header Checker updates the output automatically as you type.
- Use Copy to keep or reuse the result.
About this tool
There is no server behind Response Header Checker. Response Header Checker handles your input locally and returns the result instantly, with no sign-up.
It is designed to do one job well and stay out of your way. No data is sent anywhere, so it stays fast and private by default.
Frequently asked questions
What does Response Header Checker do?
Use Response Header Checker to check your input without installing anything using the Paste raw HTTP response headers control; everything happens client-side.
Do I need an account for Response Header Checker?
No — Response Header Checker needs no account, sign-up or installation.
Where is my data processed by Response Header Checker?
Entirely in your browser — Response Header Checker keeps your data on your own machine and sends nothing anywhere.
Does Response Header Checker work on mobile?
Yes — Response Header Checker is just a web page and runs on any modern browser, including phones and tablets.