URL shortening is a technique on the World Wide Web in which a Uniform Resource Locator may be made substantially shorter and still direct to the required page. This is achieved by using a redirect which links to the web page that has a long URL.
What is the use of URL shortener?
A URL shortener is a tool that creates a short, unique URL that will redirect to the specific website of your choosing. Basically: they make a URL shorter and simpler. Your new, shorter URL will typically include the shortener site's address, plus a combination of random letters.
Is URL shortener safe?
The security risk with a shortened URL is you cannot tell where you are going when you click the link, you have to trust the sender. As a result, some organizations teach their employees not to trust shortened URLs, or simply block them at their network gateway.