This is a lightweight alternative to add-ons such as LibRedirect so that you don't need to give ample permissions to an untrusted add-on. The simple operation of auto-redirection doesn't need a full-fledged browser extension by itself.
This user-script doesn't support many sites and front-ends but is very easy to extend and modify to a person's needs and preferences (see below).
- Install Tampermonkey for your browser.
- Install the user-script.
To add a new redirect, simply copy one of each @match and ALTERNATIVES lines to a line directly below the original and change the values. To change an existing redirect, simply alter the lines in-place to your preference.
You can perform this by selecting "Edit" from Tampermonkey's dashboard.