Channel Blocker for YouTube. Stop all those horseshit channels from reappearing in your suggestions.
Control Panel for Twitter. Allows you to customise your homepage by removing / changing parts of the UI, blocking ads and whatnot.
Save webP as png / jpg. Right-click to save those fucking awful files as something you can actual use.
Unwanted Twitch. Add channels / games / tags and keywords to a universal blacklist that stops them from appearing in the 'Browse' or recommended sections. Great for filtering out mince like IRL streams, shit like LoL etc. and chud streamers.
Webp and Heic are great inventions and we shouldn't hate them. We should hate the image viewer and editing program developers for still not supporting them.