Stripe Webhook Signature Verifier
Check a Stripe-Signature header against the raw payload and your endpoint secret, in your browser.
Tool inputs stay in your browser · optional AI search sends your query
Good to know: Computes HMAC-SHA256 of "timestamp.payload" with your whsec_ secret and compares it with every v1 signature. Use a TEST endpoint secret; nothing leaves your browser.
How to use it (step by step)
- 1Type or paste your text into the “Raw request body (exactly as received)” box. There is already an example in it so you can see how it works; press Clear to start with your own.
- 2Choose your settings: “Stripe-Signature header”, “Endpoint secret”, “Tolerance (seconds)”.
- 3The answer appears right away in the “Result” box. No button needed.
- 4Press Copy and paste the result wherever you need it.
Words to know
- Webhook
- An automatic message one system sends another when something happens, like a text alert “payment received”.
- HMAC / signature
- A secret code made from the message and a secret key. If the code matches, you know the message is real and was not changed.
- Hash / fingerprint (SHA-256)
- A short code calculated from a file or text. Change even one letter and the code becomes completely different, so it proves nothing was altered.
- Unix timestamp
- Time counted in seconds since January 1, 1970. Computers use it because it is just one number.
- SHA-1 / SHA-256 fingerprint
- A short code that identifies the key used to sign your app. Firebase, Google Sign-In and Maps ask for it to make sure requests come from your real app.
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