Developer Tools
JWT Generator
Generate JWT tokens with custom claims and headers
JWT Generation
Header (JSON)
Payload (JSON)
Secret Key
Generated JWT Token
How to Use JWT Generator
1.
Configure Header
Set the JWT header with algorithm and type
2.
Add Claims
Add custom claims with keys and values
3.
Set Secret
Configure secret key for HMAC algorithms
4.
Generate Token
Click generate to create your JWT token
JWT Generator Features
Secure Generation
Generate cryptographically secure JWT tokens
Client-Side Processing
All generation happens locally in your browser
Fast Generation
Generate tokens immediately without server delays
Frequently Asked Questions
What is a JWT token?
JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. It consists of three parts: header, payload, and signature.
Is it safe to generate JWTs here?
Yes! All JWT generation happens locally in your browser. Your data never leaves your device, ensuring complete privacy and security.
What algorithms are supported?
Currently supports HMAC algorithms (HS256, HS384, HS512) for symmetric signing. RSA and ECDSA support coming soon.
- JWT Decoder
Decode and analyze JWT tokens
- JWT Generator
Generate JWT tokens with custom claims and headers
- cURL Builder
Build cURL commands with custom headers, methods, and options
- Bcrypt Hash Generator
Hash passwords using bcrypt with configurable cost factor
- Regex Tester
Test regular expressions with live highlighting and match details
- Time Converter
Convert between UTC, local time, and Unix timestamp
- String Escaper / Unescaper
Escape or unescape special characters for JSON/JS strings
- Data Formatter
Format and validate JSON, XML, YAML, and SQL with syntax highlighting
- Base64 Encoder
Encode text to Base64 format
- Base64 Decoder
Decode Base64 text to original format
- Image to Base64
Convert images to Base64 data URLs
- Base64 to Image
Convert Base64 data to images with preview and download
- ASCII Converter
Convert text to ASCII codes and vice versa
- Gradient Picker
Pick solid colors or gradients and copy the CSS value
- Color Palette
Interactive color picker with multiple format output
- Image Color Picker
Extract colors from images with pixel-perfect precision
- Favicon Generator
Generate multiple favicon sizes from text, emojis, or images
- Cron Expression Explainer
Parse and explain cron expressions in human-readable format
- JSON Viewer
View and explore JSON data in a tree structure
- UUID Generator
Generate unique identifiers easily.
- Hash Generator
Generate various hashes for your input.
- Bulk File Renamer
Rename multiple files using patterns and download a ZIP
- Code Minifier
Minify CSS, JavaScript, and HTML to reduce file size
JWT Generator
Generate JWT tokens with custom claims and headers
JWT Generation
Header (JSON)
Payload (JSON)
Secret Key
Generated JWT Token
How to Use JWT Generator
1.
Configure Header
Set the JWT header with algorithm and type
2.
Add Claims
Add custom claims with keys and values
3.
Set Secret
Configure secret key for HMAC algorithms
4.
Generate Token
Click generate to create your JWT token
JWT Generator Features
Secure Generation
Generate cryptographically secure JWT tokens
Client-Side Processing
All generation happens locally in your browser
Fast Generation
Generate tokens immediately without server delays
Frequently Asked Questions
What is a JWT token?
JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. It consists of three parts: header, payload, and signature.
Is it safe to generate JWTs here?
Yes! All JWT generation happens locally in your browser. Your data never leaves your device, ensuring complete privacy and security.
What algorithms are supported?
Currently supports HMAC algorithms (HS256, HS384, HS512) for symmetric signing. RSA and ECDSA support coming soon.
About JWT Generator
Create signed JSON Web Tokens with custom payloads for testing, development, and debugging. Choose your signing algorithm, set the secret key, add any claims, and generate a valid JWT instantly.
Key Features
- Supports HS256, HS384, and HS512 algorithms
- Custom payload with any JSON claims
- Set expiration time and issued-at claims
- Copy generated token with one click
- Runs entirely in browser — secret never transmitted
How to Use
- Enter your signing secret key
- Choose the algorithm (HS256, HS384, or HS512)
- Add your payload claims as JSON key-value pairs
- Click "Generate JWT" and copy the result
Frequently Asked Questions
What signing algorithms are supported?
The tool supports HMAC-based algorithms: HS256, HS384, and HS512, which use a shared secret key for signing and verification.
Can I use this to test my authentication API?
Yes. Generate a token with your API's expected claims and secret to create test tokens for your development or staging environment.
What claims should I include?
Common standard claims are "sub" (subject/user ID), "exp" (expiration Unix timestamp), "iat" (issued at), and "iss" (issuer). Add any custom claims your application needs.
Is my secret key safe?
Token generation happens entirely in your browser. Your secret never leaves your device. Still, avoid using real production secrets with any online tool.