JWT Decoder

Decode JWT header and payload, view expiry time

JWT Decoder is a free online Developer tool. Decode JWT header and payload, view expiry time Related terms: jwt · json web token · token · decode · 解析. Use it on this page without signing in.

Token 已过期过期时间：2023-11-14 22:13:20
签发时间：2018-01-18 01:30:22
Header（头部）
{
  "alg": "HS256",
  "typ": "JWT"
}
Payload（载荷）
{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022,
  "exp": 1700000000
}
Signature（签名）
signature_part

仅在前端解码展示，不验证签名。请勿在客户端处理敏感 Token。

Help

使用说明

  1. 将完整的 JWT 字符串（三段以 . 分隔）粘贴到输入框
  2. 自动解析 Header、Payload 并展示
  3. 显示签名算法和过期时间（exp）等关键字段
  4. Payload 内容可一键复制

常见问题

  • 数据处理安全吗？ 仅在本地解码展示，JWT 内容不上传
  • 能破解签名吗？ 本工具只做 Base64 解码，不验证也不破解签名
  • Payload 乱码？ JWT 各段是 Base64URL 编码，自动解码后即可读

补充说明

JWT 默认不加密，Payload 任何人都能解码，请勿在其中放置敏感信息；签名仅保证内容未被篡改。

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FAQ about JWT Decoder

What can JWT Decoder do?

JWT Decoder is a Developer tool. Decode JWT header and payload, view expiry time You can finish the job on this page.

Who should use JWT Decoder?

Anyone handling jwt · json web token · token · decode · 解析 who does not want to install desktop software can use JWT Decoder in the browser.

Is JWT Decoder safe? Is my data uploaded?

This tool runs in your browser. We do not collect the content you enter into JWT Decoder just because you used it.

What similar tools exist?

Related tools in the same Developer group are listed at the bottom of this page.