Let's post some browser extensions. Mine will all be for firefox, but there are some non-firefox browsers that let you install (some? all? depends on which browser) firefox extensions anyway. For instance: Brave is chromium, but has no google integration, and Orion is webkit (safari) but has been forked to allow some-but-not-all firefox and chrome extensions.
Here are the extensions I am currently running, with some details.
AI Warning For Steam pops up a warning when you open the steam listing for a game that has filled out steam's required AI use notification. I don't use steam in my browser, like, at all? But I might one day.
Blocktube lets you block specific videos and also whole channels from appearing on youtube. You can import other people's lists of blocked channels, and I made use of that feature as part of
un-ai.digitalprophet.online to block AI channels, but you can use it to block anything. I sometimes will block channels that use the "surprised reaction face" in thumbnails, just cause it pisses me off. Note that while this works fine on desktop, YMMV on mobile browsers.
Load Reddit Images Directly makes all images on Reddit point to the actual image instead of a goofy html page. If you don't use reddit a lot or you don't save images from reddit a lot then this is pointless for you.
New Tab Override changes the page that opens when you open a new blank tab. That's it. Some forks of firefox let you do this in the settings, some do not.
Old Reddit Redirect makes every reddit link load into old.reddit.com which has the old non-shit UI.
Privacy Badger blocks trackers and whatnot. Its from the EFF and it only fucks up some websites some of the time that I need for work. Luckily you can turn it off per-site.
Reddit Enhancement Suite makes reddit suck less and also adds features back in that reddit now charges for. Fuck you, reddit. Eat shit.
Return Youtube Dislike adds the thumbs down back to youtube. It is more-or-less (mostly less) accurate for some videos. It uses its own API and database, but it can only track thumbs down from other people who have the extension installed, so... yeah. Better than nothing.
Save WebP as lets you download webp images as png or jpg or a number of other image types. Webp is a pain in the ass since adoption on applications that AREN'T browsers is not 100% yet.
Sponsorblock skips sponsor segments (and many other types of segments if you want) on youtube videos. It does this by crowd sourcing time stamps, which anyone can upload to their server, then the extension uses those time stamps to skip segments on videos. I
love sponsorblock. This is made by the same person that made dearrow (see below) which is similar.
Tampermonkey runs userscripts like Greasemonkey. I can't remember why I quit using greasemonkey but there must have been a reason. There is another fork called "violentmonkey" that is open source, and "firemonkey" that is firefox-focused, but Tampermonkey has worked for me for a long time, so...
The Camelizer is going to be controversial because it is absolutely selling your purchasing data. It's the browser extension version of CamelCamelCamel, and it's a really good price tracker for amazon. its a one-button click on any amazon product page to see the price history of the product, and you can set up automatic notifications to your email when the price on a product reaches X amount. I use it to notify me when shit I buy regularly like energy drinks hit the price I am willing to spend on them.
TWP (Translate Web Pages) automatically translates web pages. It uses google translate or yandex so this is technically supporting LLMs which... ugh. But it works, more or less.
Ublock Origin doesn't really need me to tell you what it is. If it does, then you need to go ahead and install this right now. There are several block lists you should install in addition to the default ones:
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You do that by copy/pasting each of these into the import box at the bottom of the filter list tab. You can add them all at once as long as they're on separate lines. Then hit SAVE or whatever.
Unhook is one of several extensions I have to specifically fuck with youtube. This particular one lets you do things like hide shorts from appearing anywhere on youtube, and massage the way things look. This extension was abandoned for years, but the author recently (well, April) updated it. You can use Ublock Origin and YT-Tweaks to replicate a lot of what this does, but not as easily, and not as completely.
User Agent Switcher is used to spoof browser user-agents. My bank thinks I use chrome because for a while they didn't accept firefox browsers (they do now). There are a handful of sites that I use different user agents on for various reasons.
YT-Tweaks lets you do
all kinds of shit to youtube. Hide stuff, re-arrange stuff, change the way all manner of shit works. I like it a lot but it takes some time to set up when you first install it, if you don't just want the default shit. You can just about get youtube back to the way it was in the early 00s before google
fucked it to shit.
Honorable Mentions:
I don't have these running currently but I do switch them on sometimes when I get tired of some bullshit.
Dearrow crowd sources thumbnails, and then overrides shitty clickbait thumbnails on youtube with the crowd sourced ones. When I say crowd sourced I mean: people select segments from the video to serve as thumbnails. I like it, but not enough people use it to make it worth the tiny delay when loading youtube feeds.
Adnauseum doesn't just block ads, it also clicks (invisibly) on every single ad it comes across, thereby fucking not only advertisers, but also user metrics and telemetry data. I love the idea behind this one but it interfered with some websites and didn't work as well as ublock origin. I see that it was updated yesterday, I may give it another shot.