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Developer
JWT Decoder
Inspect JWT header and payload without verifying or uploading the token.
Open related tool
DeveloperProcessed on this device
JSON Formatter
Format, minify and validate JSON with useful error locations.
How it works
Paste strict JSON, choose an indentation style and run Validate, Format or Minify. Diagnostics point to the first issue.
Privacy
JSON is processed in a worker in this browser. It is not uploaded, persisted or included in analytics.
FAQ
Are duplicate keys accepted? No. Duplicate keys are rejected so the result is not ambiguous.
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