JWT Decoder
JWT Decoder
This tool only decodes the header and payload. It does not verify the signature.
Overview
Free JWT decoder. Instantly decode header and payload claims from JSON Web Tokens.
Decode JWT header and payload without verifying signatures.
Common workflows
- Format and validate JSON before committing, debugging, or pasting payloads into API tools.
- Decode JWTs, Base64 strings, URL-encoded text, and HTML entities while investigating data flow issues.
- Preview HTML, CSS, and JavaScript together or convert between related web data formats like CSV, JSON, and YAML.
FAQ
Does this verify signatures?
No. This tool only decodes the header and payload.
Is my token sent to a server?
No. Decoding is done locally in your browser.