About
☰
All Tools
Categories
Blog About

JWT Generator – Create JSON Web Tokens for Testing

Generate JWT tokens with custom claims, algorithms (HS256, RS256), and expiration for authentication testing and development.

🟢 Runs locally · no uploads

rocket_launchQuick Start Templates

152 bits (19 characters)
JWT Payload (JSON)
Generated JWT
token
Generated JWT will appear here
Enter a JSON payload and click Generate
Keyboard: Ctrl+V paste payload • Ctrl+Enter generate

Related tools

Show more

JWT Decoder & Validator

Stop debugging JWT authentication blindly! Decode JSON Web Tokens instantly to inspect headers, payload claims, expiration times, and signatures. Perfect for troubleshooting auth issues and validating token structure. Free, works offline, never uploads your tokens.

Base64 Encoder & Decoder

Stop struggling with Base64 encoding! Encode and decode Base64 data instantly for binary files, text, images, and API tokens. Supports standard and URL-safe formats with file upload and data URI generation. Perfect for embedding images, API development, and data transmission. Free, works offline, handles large files.

Hash Generator (MD5, SHA-1, SHA-256)

Stop downloading hash calculator software! Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly for file integrity verification, checksums, and data validation. Supports multi-algorithm output, optional salting, hex/Base64 formats, and processes files up to 50MB in your browser. Perfect for developers and security professionals. Free, works offline, unlimited hashing.

JSON Formatter & Validator

Stop squinting at minified JSON! Format and validate JSON instantly with automatic error detection, syntax highlighting, and pretty printing. Catches missing quotes, trailing commas, and invalid syntax. Works with JSON and JSONC. Perfect for debugging API responses and config files. Free, works offline, unlimited usage.

Encryption & Decryption Tool

Stop exposing sensitive data! Encrypt and decrypt text instantly using industry-standard AES algorithms. Generate secure keys, protect sensitive data, and learn about cryptography. Supports AES-GCM, AES-CBC, and educational ciphers. Free, works offline, never stored.
Show more

Encryption Key Generator

Generate cryptographically secure encryption keys for JWT secrets, API keys, database encryption, and environment variables. Supports multiple formats and key sizes.

Password Generator

Stop using weak passwords! Generate cryptographically strong passwords instantly with custom length, character sets, and exclusion rules. Create secure passwords for accounts, API keys, and encryption. Bulk generation available. Free, works offline, never stored.

Password Strength Checker

Analyze password strength and security with comprehensive checks for common vulnerabilities, patterns, and entropy calculation. Get detailed improvement suggestions.

Password Policy Generator

Generate comprehensive password policies with compliance standards, validation rules, and implementation guides for different organizational needs

File Hash Integrity Checker

Generate, verify, and compare file hashes for integrity checking using multiple cryptographic algorithms.
› About this tool · FAQ

Stop manually crafting JWT tokens for API testing! Generate secure JSON Web Tokens (JWT) instantly with HMAC, RSA, or ECDSA signing. Add custom claims, set expiration, configure audiences and issuers. Perfect for testing authentication flows and OAuth implementations. Free, works offline, no server uploads.