CleanURI vs Free Url Shortener

CleanURI is a minimal, free URL shortener with a single documented endpoint: POST /api/v1/shorten takes a (URL-encoded) long URL and returns a short cleanuri.com link as JSON. It needs no account or API key, making it one of the simplest shorteners to call programmatically, though it offers no analytics, custom aliases, or link management beyond creation.

Ulvis' Free URL Shortener shortens links through a plain GET or POST API with no signup or key required. It supports custom short names, click limits, passwords, and expiry dates, returning results as JSON or XML. It sends no CORS header, so the API must be called from a server rather than directly from browser JavaScript.