How to: What is a URL Shortener?
A URL shortener service creates an alias or a short URL for a long URL. Users are redirected to the original URL when they visit these short links.

For example, the following long URL can be changed to a shorter URL.

**Long URL**: [https://karanpratapsingh.com/courses/system-design/url-shortener](https://karanpratapsingh.com/courses/system-design/url-shortener)

**Short URL**: [https://bit.ly/3I71d3o](https://bit.ly/3I71d3o)