Free Data Menu Tool

JWT Encoder / DecoderFast utility.

Inspect, decode, and encode JWTs—no upload required.

Browser-first

Designed for fast, practical workflows without unnecessary friction.

Free utility

Built by Data Menu to help developers, operators and data teams move quicker.

Data-ready

Useful for formatting, cleaning, generating, converting and validating everyday data.

Interactive workspace

Paste, generate, convert or clean your data directly in the tool below.

Ready to use

Auto-detect

Alg

Load Sample

JWT input

Decoded JSON

Header

Payload

Data never leaves your browser. Provide a secret to verify HS* signatures.

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