Developer tool

JWT Decoder

Decode, inspect, and verify JSON Web Token contents locally without sending them to any server.

How it works

Paste a token in the input box. The tool will parse it immediately, splitting the header, payload, and signature components so you can inspect claims like issuer, expiration date, and algorithm parameters.

Paste encoded token
Invalid JWT structure. A JWT must contain 3 parts separated by dots.

Header

Algorithm & Type 
{}

Payload

Claims / Data 
{}
New Tool Launched Remove PDF Password Decrypt and remove password protection from PDFs in the browser. Remember password feature, fully private. Released on 26 Jul 2026