About Webhook Signature Verifier
A webhook signature verifier helps you compare a received webhook signature with the digest you compute from the original request body and shared secret. It is useful when you need to debug failed GitHub, Stripe, Slack, or custom webhook deliveries without writing a one-off script for every provider and replay case.
How to Use Webhook Signature Verifier
- 1Paste the raw webhook request body, the received signature header value, and the shared secret or signing key required by the provider.
- 2Choose the verification mode or provider format that matches the header scheme used by the webhook source.
- 3Review the computed digest and comparison result before you update your endpoint code, environment variables, or webhook documentation.
Common Use Cases for Webhook Signature Verifier
Local endpoint debugging
Recreate signature verification with a captured payload when a webhook request keeps failing after you move between environments or frameworks.
Provider onboarding
Check the expected signing flow for a new webhook source before you wire the header parsing and secret handling into production code.
Incident follow-up
Confirm whether a rejected event failed because of body changes, the wrong secret, or a mismatch between provider-specific signature formats.
Frequently asked questions
Which values do I need to verify a webhook signature?
Use the original raw request body, the exact signature header value that arrived with the request, and the same secret or signing key configured for that endpoint. Any change to the body bytes can change the digest.
Does a matching signature mean the event is completely trustworthy?
A matching signature confirms the payload matches the shared secret check, but you should still validate timestamps, endpoint routing, replay rules, event IDs, and the business logic your integration depends on.