Remaking the Web With Browser Scripts
Greasemonkey lets you secretly rewire any website to function exactly how you want. By running custom scripts, you can permanently alter, hide, or automate parts of web pages before they even finish loading.
Most people assume a website looks the same for everyone, but this tool proves otherwise. You can use it to strip away annoying ads, add missing features to your favorite apps, or change color schemes on sites that lack a dark mode. It puts the control back in your hands, allowing you to build your own personal version of the internet without needing the site owner’s permission.
Source: Greasemonkey