find code here: https://github.com/gabrielzv1233/Cursor-selector-bookmarklet/blob/main/bookmarklet.js
installing a bookmarklet (the program that is used here) is as easy as making a new bookmark and changing the URL to the code that you have been given and optinally changing the name of the bookmark, to run the bookmarklet, just click the bookmark you made
Can also be found here: https://replit.com/@gabrielzv1233/Cursor-selector
you can set via URL/URI, cursor type via name (button to show documentation included), via image file