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.