To "download" hotkeys for Chrome, you generally don't download a standalone file; instead, you install specialized extensions from the that allow you to map custom actions to your keyboard. Top Extensions to Download for Custom Hotkeys
If the standard Chrome shortcuts aren't enough, these highly-rated extensions let you build your own:
: Ideal if you want to set specific keys that only work on certain sites. How to Set Up Your Downloaded Hotkeys
: A lightweight tool specifically designed for defining your own shortcuts to reduce repetitive browsing tasks.