⌕
Home › Developer › JWT Decoder

JWT Decoder

Decode JWT header and payload locally. Signature is not verified.

Result—
Enter values above.
Decoding does not verify authenticity or signature. Never treat decoded claims as trusted without cryptographic verification.

Related calculators

Continue with a related tool.

{}

JSON Formatter & Validator

Format, minify and validate JSON in your browser.

64

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 to text.

%

URL Encoder / Decoder

Encode and decode URL components.

Content reviewed: 24 September 2026

About the JWT Decoder

Decode JWT header and payload locally. Signature is not verified. Use the controls above to enter the values or text required by this specific tool, then review the result together with the method and limitations shown on the page.

Method

A JWT's first two Base64URL sections contain the header and payload.

Limitations

Decoding does not verify authenticity or signature. Never treat decoded claims as trusted without cryptographic verification.

For information about calculation checks, browser-side processing and external services, see Methodology & Accuracy.