使用方法: JWT 產生器
JWT 產生器 是一款免費線上安全工具工具，可在瀏覽器中即時sign and verify JSON Web Tokens entirely in your browser — HS256, HS384, HS512, RS256 and ES256 run on your own WebCrypto, fresh RSA-2048/EC P-256 pairs export as PKCS#8 and SPKI PEM, exp/iat come back as human dates, and the unsigned "none" algorithm is refused by design. Nothing is uploaded。貼上資料、調整選項即可即時獲得結果——無需安裝、無需註冊，任何資料都不會上傳到伺服器。
說明
Sign and verify JSON Web Tokens entirely in your browser — HS256, HS384, HS512, RS256 and ES256 run on your own WebCrypto, fresh RSA-2048/EC P-256 pairs export as PKCS#8 and SPKI PEM, exp/iat come back as human dates, and the unsigned "none" algorithm is refused by design. Nothing is uploaded.
- 安全工具
- 由於全部運算都在客戶端完成，使用 API 金鑰、權杖或私有記錄等敏感資料時，JWT 產生器 同樣安全。
使用方法
使用 JWT 產生器 只需三步：
- 將資料貼上到輸入框（或載入範例）。
- 依目標格式或使用情境調整選項。
- 複製、下載或檢視輸出——輸入時結果即時更新。
執行
範例
Builds a signed HS256 token whose exp (2030-01-01 UTC) is shown with its human UTC/local time. Secrets never leave the browser and the unsigned "none" algorithm is refused by design — for inspecting foreign tokens use the Decoder / Verifier pages (the loopback pair of this generator).
輸出（由工具此刻实时生成）
Signed with HS256 — the token below is the compact serialization:
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiIyNjE3MyIsInN1YiI6ImRlbW8iLCJleHAiOjE4OTM0NTYwMDB9.-ZCXzFd37b5ZNaDyjyUHfPXEyKzs9ta4TTj5AyO5xpE
Header: {"alg":"HS256","typ":"JWT"}
Payload: {"iss":"26173","sub":"demo","exp":1893456000}
Claim times (your browser clock):
Expires at: 1893456000 = 2030-01-01T00:00:00.000Z UTC | local: Tue Jan 01 2030 00:00:00 GMT+0000 (Coordinated Universal Time) -> still valid
Paste the token into the Verify mode on this same page (or the JWT Verifier page) to check it; to inspect claims without verifying use the JWT Decoder page. Everything ran in your browser — the secret and key never left this machine.
此输出由工具真实运行产生，并非人工编写。
使用場景
JWT 產生器 常見的使用情境：
- Sign and verify JSON Web Tokens entirely in your browser — HS256, HS384, HS512, RS256 and ES256 run on your own WebCrypto, fresh RSA-2048/EC P-256 pairs export as PKCS#8 and SPKI PEM, exp/iat come back as human dates, and the unsigned "none" algorithm is refused by design. Nothing is uploaded.
參數說明
此工具沒有可設定參數，直接對輸入內容生效。
常見問題
什麼是 JWT Generator？
JWT Generator 用於sign and verify JSON Web Tokens entirely in your browser — HS256, HS384, HS512, RS256 and ES256 run on your own WebCrypto, fresh RSA-2048/EC P-256 pairs export as PKCS#8 and SPKI PEM, exp/iat come back as human dates, and the unsigned "none" algorithm is refused by design. Nothing is uploaded。它完全在瀏覽器內執行，資料保持私密。
JWT Generator 可以免費使用嗎？
可以。JWT Generator 免費、無次數限制，無需註冊或安裝。
我的資料會被上傳嗎？
不會。所有處理都在本機瀏覽器完成，不會傳送到任何伺服器。
注意事項
- 全部计算在浏览器端完成，因此超大输入受限于标签页内存，而非服务器上传限制。