Screenshot / Code Snippet
The code is in this file on GitHub.
This script adds a box to the paginator where you can type in a page number (i.e., on the Questions page), press Enter, and then it will take you to the page number you specified.
The user Goku カカロット suggested a feature that does this in this MSE question. As far as I know, this isn't an official feature currently, so I wrote a userscript that does that.
This userscript is under the MIT license.
I typically write these on Windows in either Firefox or a Chromium-based browser with Tampermonkey installed. Other userscript managers may work, but I don't test with other ones.
I made this. The easiest way to contact me is to ping me in Chat, but feel free to leave a comment/answer here, or file an issue on the GitHub repo that my userscripts are in.