A URL shortener is a web service that takes a long and often complex URL (Uniform Resource Locator) and converts it into a shorter, more manageable link. The primary purpose of a URL shortener is to make links more user-friendly and easier to share, especially in situations where character limits or aesthetics are important.

These services are particularly useful for sharing links on social media platforms, in text messages, or in printed materials where long URLs might be cumbersome.