Super Simple solution to build your own shortlinks.
For example, I own mattjamesboyle.com. By deploying this code to Cloudflare workers I can now access sc.mattjamesboyle.com/git and it redirects to github.com/matthewjamesboyle. I plan to buy a shorter domain, so I can do stuff like sc.wtf/git
To add new URLS, simply add them to the JSON object at the top of index.js. You could make this a little better by using Cloudflare Workers KV, but since they are not free I avoided them.
You'll need a Cloudflare account. You can visit this page to get started.
Once done, make sure you install the Wrangler CLI
Once done, simply rename wrangler.toml.example to wrangler.toml and fill in the details. Update the short links to whatever you want, and run wrangler build and wrangler publish.
You should now have your own short linking system running on whichever route you specified in wrangler.toml!