Here is one, that works on every website: en.gibney.org/savescroll_info/ Its intended use is to include it in the website, but you can also use the javascript

Here is one, that works on every website: en.gibney.org/savescroll_info/ Its intended use is to include it in the website, but you can also use the javascript in Greasemonkey. Here is the link to the code: javascript.gibney.org/savescroll.js