URL shortener, QR code generator, and link analytics API. Create short links, generate QR codes, and track click analytics.
Jo4 is a modern URL shortening service with QR code generation and detailed link analytics.
All protected endpoints require an API key. Set your API key as an environment variable:
export JO4_API_KEY="your-api-key"
Get your API key from: https://jo4.io/api-keys