Developer ToolsUpdated
JWT Decoder
Decode JWT tokens online for free. View the header and payload of any JSON Web Token in a readable format. No server-side verification.
Features
Handles large code files and data structures efficiently
Syntax-aware processing for accurate results
Copy, download, or export results in multiple formats
Works offline — no server round-trips needed
How to Use JWT Decoder
1
Open the Tool
Navigate to the JWT Decoder page to get started.
2
Provide Input
Upload your file, paste your content, or enter your data into the tool.
3
Configure Options
Adjust any available settings to customize the output to your needs.
4
Get Results
Process your data and download, copy, or save the result instantly.
Frequently Asked Questions
Does this tool verify JWT signatures?▼
No. This tool only decodes the header and payload. Signature verification is not performed as it requires the secret key.
Is my JWT sent to a server?▼
No. All decoding happens locally in your browser using base64url decoding.