A bookmarklet is a script that you can save as a bookmark in your web browser. Then when you click on the bookmark, instead of going to a different page, you'll run that script on the current page.
Instructions: Drag one of the blue bookmarklet names to your bookmarks bar. Once there, you can click on it to execute it on the current page.

This bookmarklet allows you to select multiple elements in your browser to automatically click at a set rate. You can choose an exact "clicks per second" for each element and select as many elements as you would like. Once you are done selecting them all, press ESC to lock it in and they'll all begin. The program will keep clicking on those elements until the browser tab is closed or the page is changed/reloaded.