JWT generator
Sign HS256/384/512 JWTs with Web Crypto locally
Interactive controls load with JavaScript. Processing stays in your browser.
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How to use
- 填写 Payload JSON 与 HMAC 密钥，选择 HS 算法。
- 可自动写入 iat，并按秒数设置 exp。
- 签名使用 Web Crypto，全程本地。
- 解码请用「JWT 解析」工具；本页不验签外站令牌。
FAQ
Does JWT generator upload my data?
No. JWT generator runs locally in your browser and does not upload content to www.518882.com or third-party APIs.
Do I need an account?
No. Open and use — no signup, login, or paywall. Open JWT generator and use it — no signup, login, or paywall.
How is this different from upload-based tools?
Tools run locally in your browser; content is not sent to our servers for processing — suited to private text and drafts.
Are there limits?
Limited by device memory and the browser; very large inputs may slow the page. There is no account quota.