Encoding and Decoding

JWT Decoder

Decode JWT headers and claims without sending tokens to a third-party service.

Result

{ "alg": "HS256" } and { "sub": "123" }

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{ "alg": "HS256" } and { "sub": "123" }

Is the JWT Decoder free to use?

Yes. The JWT Decoder is available as a free web tool, with API access designed for authenticated users and future paid plans.

Is my input stored?

Public tool requests log minimal operational metadata. Saved results are only stored when an authenticated user explicitly saves them.

Who is this encoding and decoding tool for?

It is built for developers, platform engineers, security teams, and operators who need quick, repeatable checks during daily work.