OAuth Token Debugger
Inspect and debug OAuth tokens in your browser
Paste a JWT (OAuth access token, ID token, or any JWT) above to decode and inspect its claims. The tool highlights OAuth-specific claims like scope, audience, issuer, and authorized party, and shows expiry status in real-time.
Why This Tool
Debugging OAuth flows requires inspecting token contents, checking expiration times, and verifying claims. This tool decodes OAuth tokens (typically JWTs) and displays their header, payload, and signature in a readable format, helping you diagnose authentication issues quickly.
How It Works
Paste your OAuth token into the input field. If it is a JWT, the tool decodes the Base64url-encoded header and payload sections, displays the claims with timestamps converted to human-readable dates, and highlights expiration status. All processing happens in your browser.