JWT (JSON Web Token) Claims Inspector
Decode JWT headers and payloads with expiration timestamp conversion.
Tool inputs stay in your browser · optional AI search sends your query
Good to know: Decodes JSON Web Tokens client-side. No secret keys or credentials are ever sent over the network.
How to use it (step by step)
- 1Fill in the boxes: “JWT Token String”. Example numbers are already there so you can see how it works; replace them with yours.
- 2The result updates instantly as you type (on a phone it is below the boxes).
- 3The bold line is the main answer. Tap Copy next to any value to copy it.
Words to know
- JSON
- A common text format apps use to store and send data, made of names and values in { } brackets.
- Unix timestamp
- Time counted in seconds since January 1, 1970. Computers use it because it is just one number.
- JWT
- A login “ticket” websites give you, written as three parts separated by dots.
- Expiry date
- The month and year printed on a card (MM/YY). The card works until the last day of that month.
More in Developer
JSON to XML ConverterConvert JSON into well-formed XML with your own root element name.JSON to Go StructGenerate Go structs with json tags from sample JSON, including nested objects and lists.JSON to Python Class (Dataclass / Pydantic)Generate Python dataclasses or Pydantic models from sample JSON, with type hints.YAML to JSON Converter & ValidatorConvert YAML (Docker Compose, Kubernetes, GitHub Actions, configs) to JSON and catch indentation mistakes.XML Formatter & ValidatorPretty-print messy XML with clean indentation, or minify it, and find unclosed tags.SQL Formatter (Beautifier)Format long SQL queries into readable lines: SELECT, FROM, JOIN, WHERE, GROUP BY each on their own line.