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Ultimate JWT Tool
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Ultimate JWT Tool
Decode · Generate · Verify (HS/RS/ES) · JWE Encrypt/Decrypt · WebCrypto · PEM Key Support
🔍
Decode
⚡
Generate
✅
Verify
🔒
JWE Encrypt/Decrypt
📥
Enter JWT Token
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwczovL25nLmNjIiwic3ViIjoidXNlci1uZyIsIm5hbWUiOiJubyBnb29kIiwiZW1haWwiOiJkZW1vQG5nLmNjIiwicm9sZSI6InVzZXIiLCJpYXQiOjE3NzIzNDczMTAsImV4cCI6MTc3Mjk1MjExMH0.pdoJFb133A7bipl69bPOC5AeIJrP5TBuoeWB3l6_3QM
🔓
Decode
🗑️
Clear
📋
Sample
📋 Header
Copy
📋 Payload
Copy
🔑 Signature
Copy
📊 Token Info
⚙️
Payload Configuration
🔖 Issuer (iss)
🆔 Subject (sub)
👤 Name
📧 Email
🎭 Role
👤 Regular user
👑 Admin
✏️ Editor
⏳ Expiry
1 hour
24 hours
7 days
30 days
🔐
Signature Settings
🔑 Algorithm
HS256
HS384
HS512
RS256
RS384
RS512
ES256 (P-256)
ES384 (P-384)
ES512 (P-521)
🗝️ Secret / Private Key (PEM for RSA/EC)
ng.cc-secret-key-2026
⚠️ Key is only processed in browser memory – never uploaded.
⚡
Generate JWT
🎫
Generated Token
📋
Copy
💾
Download
✅
Verify Token
🎫 JWT Token
🔑 Algorithm
HS256
HS384
HS512
RS256
RS384
RS512
ES256
ES384
ES512
🗝️ Secret / Public Key (PEM for RSA/EC)
ng.cc-secret-key-2026
🔍
Verify
📊
Verification Result
🔒
Encrypt (JWE)
📄 Plaintext
{"message":"Hello secure world!"}
🔑 Public Key (PEM)
🔑
Generate Temporary RSA Key Pair
🔐
Encrypt
🔓
Decrypt (JWE)
📦 JWE Token
🔑 Private Key (PEM)
🔓
Decrypt
📋
Result
Copy