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🔐JWT Parser
Input
Result
JWT Token:
📖 Usage Guide
Step 1: Enter JWT Token
Paste your JWT token into the input field. JWT tokens consist of three parts separated by dots (header.payload.signature).
Step 2: Parse Token
Click the 'Parse' button to decode and analyze your JWT token. The tool will extract the header, payload, and signature components.
Step 3: Review Results
Examine the decoded header and payload information. The tool will indicate whether the token format is valid.
Step 4: Copy or Export
Copy the parsed results or use the sample token for testing. All data is processed locally for security.
✨ Features
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JWT Structure AnalysisDecode and display JWT header, payload, and signature components with detailed formatting.
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Format ValidationAutomatically validate JWT token format and structure, identifying any parsing errors.
✅
Secure ProcessingAll JWT parsing happens locally in your browser - no data is sent to external servers.
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Developer FriendlyPerfect for debugging authentication issues and understanding JWT token contents during development.
🔬Technical Guide
JWT StructureJSON Web Tokens (JWT) consist of three Base64-encoded parts: Header (algorithm and token type), Payload (claims and data), and Signature (verification). Each part is separated by a dot (.).
Base64 DecodingThe header and payload are Base64URL encoded. Our tool decodes these parts to reveal the JSON structure containing algorithm information and user claims.
Security ConsiderationsThis tool only parses and displays JWT contents. It does not verify signatures or validate claims. Always verify tokens using proper cryptographic libraries in production.
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