Many social platforms don't allow users to put links in their social media posts. They only offer a place to put a link in your social profile's description area. Placing a link in the description or BIO section can direct your followers to a separate website or page. InsightURL Shortener allows you to generate Bio Pages where you can add your links and other widgets. 

You can set a Bio Page as default as access it via your username i.e. https://site/user/username. Just go to Bio Pages > Select the Bio Page and Choose Set as Default.