If all you need to do is to "hide" the parameters, you can just use a subdomain of your choice regardless of the length, like post.domain.com or a.domain.com. H

If all you need to do is to "hide" the parameters, you can just use a subdomain of your choice regardless of the length, like post.domain.com or a.domain.com. However, if you want an actual "shortened" url, you will need a short domain name. Shorteners use TLDs other than .com to make it even shorter. For example, reddit.com uses redd.it for short urls.