The best reason to use a URL shortener is s that you have access to the data on what people do when they see your click. If you post a regular, cut and pasted URL you won’t be able to track real-time engagement with it or clicks, but when you shorten a URL you’ll be able to track click-through rates and even track where they are clicking from.
For example, if 80 people click on a URL in a funny post promoting your blog post but only 20 people click on a URL in a more serious post, this knowledge can be applied to future posts. In other words, URL click data can be used to increase the chances of your followers clicking a link.
bit.ly is a URL shortening service that offers tracking metrics so you know exactly how many people are clicking on your link. It’s a free service where you can share links directly from their site to any of your social media profiles.