Push to Kindle sends any text article to PDF or to your ereader (not only Kindle)
Recipe Filter filters recipe pages on blogs and just gets the actual ingredients & instructions
Redirector for a few paywalls where I use a specific proxy
RSS Reader Extension (by Inoreader) - as I use Inoreader for following RSS feeds
Sci Hub Injector adds sci-hub links to many science publishing websites for easy access
Shinigami Eyes highlights trans-friendly and transphobic social media users or websites
uBlock Origin
ViolentMonkey for userscripts
Extensions to be helpful to other people:
Picket Line Notifier tells you if the website you are visiting has workers on strike - useful especially for ecommerce & news publishers
Snowflake is not noticeable for me, but allows other people to use my network as a Tor node or something idk
Wayback Machine archives every page I visit on the Internet Archive.
Fediverse extensions:
FediAct allows me to boost, reply to, follow, etc. on any Mastodon instance without having to open the right link in my own instance. I wish there was something like this for Lemmy and Peertube.
Fedishare allows for one-click sharing to several Fediverse platforms, including Lemmy and Mastodon
PeerTubeify tries to check if a YouTube video you're watching is also on PeerTube
Youtube extensions:
Auto HD / 4k / 8k pour YouTube™ - I use it for the environment, so default quality is 480px (because usually I watch the videos on a small side window so it doesn't change the visible quality)
Clickbait Remover for YouTube - replaces thumbnails with a frame from the video and makes all titles normally named, no all caps
DF YouTube (Distraction Free) - removes the homepage & sidebar on videos to avoid rabbit holes
SponsorBlock auto-skips sponsored segments, intros, credit rolls, etc. on YouTube videos
Yeah it's what the creator put as the official website of the plugin for some reason. Check Recipe Filter on the Firefox plugin page, you should be able to find it; the icon is a green card/newspaper thingy.