A shortlink or URL shortener is an online service that converts a long URL (uniform resource locator) into a shorter URL that points to the same web address.
The service creates a short, randomly-generated URL that is easier to share by SMS (short message service), e-mail, or on social networks. URL shorteners are especially useful with social networks like Twitter, which only allows 280 characters per post.
URL shortener example
For example, the URL:
...using the TinyURL service. When you go to the short URL, your browser contacts TinyURL's website. TinyURL translates the short URL into the original URL, and forwards your web browser to the actual address.