JWT Decoder
Decode JWTs locally without uploading tokens.
How to use
- 粘贴 header.payload.signature 格式的 JWT。
- 自动 Base64URL 解码并格式化 JSON。
- 若含 exp / iat，统计区会显示本地时间。
- 本工具不验证签名，仅供调试查看。
SSS
Does JWT Decoder upload my data?
No. Processing stays in your browser and is not uploaded.
Do I need an account?
No. Open and use — no signup.
How is this different from upload-based tools?
Tools run locally in your browser; content is not sent to our servers for processing.
Are there limits?
Limited by device memory and the browser; very large inputs may slow the page.