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What browser extensions do you absolutely love to use?
I have two that I will highly recommend:
Vimium has completely changed the way that I use my browsers. They have extensions for firefox and safari as well, but the link I provided is for chrome. If you are used to vim keybindings, it makes websites almost completely navigable using only your keyboard! Here's a video demonstration of it in case you're interested.
My other is SponsorBlock for youtube. This one makes using youtube a little more bearable by automatically skipping the baked-in sponsorships and advertisements. It has literally cut down my viewing times of some channels by like 20%.
Are there any other extensions that you absolutely love?
I can't use any desktop browser without uBlock Origin.
Sometimes I see my coworkers browse the internet without an ad blocker, and I'm absolutely floored by how different our experiences are. They're looking at a completely different site than I am.
I just don't understand how anyone can find that amount of ads acceptable at all. Like if adblockers didn't exist, I would probably just use the internet a whole lot less, it's that intrusive and obstructive.
My mom used to think i was being ridiculous when i complained about her unusable, ad-ridden laptop. Since Ublock, she's started complaining about ads on TV more.
It's like some They Live glasses, it's creepy how pervasive & invisible it becomes.
There's a festival I've been to a few times where there's now ads in the whole area, and when you go back to the real world after a few days there that's really what it feels like. It's pretty eye opening to learn how desensitized one becomes in everyday life.
I have to pull up incognito windows all the time because the company I works for runs digital ads. Otherwise I would never see what they look like in the wild because of uBlock Origin.
I definitely understand some folks' reluctance to check shit out when I see them browsing without blocking ads. The internet sucks when you have to navigate that shit, I wouldn't wanna do it either lol
I still like uMatrix, even though it's not being developed any more. I feel like it gives more flexibility than uBlock Origin.
I've converted to the uBlockOrigin blocking modes which is almost the same
It does seem like uBlock Origin in medium mode is pretty similar to the default uMatrix setup. I'll give it another try for a while.
One of the things I use a lot in uMatrix is enabling third-party scripts (and/or XMLHttpRequests) for only specific domains. (e.g. let a given site pull scripts from
cdn.jquery.comwhile continuing to blockconnect.facebook.com.) Obviously, to do that I need to know which domains are loading scripts. It seems like uBlock Origin combines all blocked resources into a single “-/--/---”, so it's harder to tell what exactly was blocked for a domain and, consequently, a little harder to work out which domains need to be allowed to make things work (and that was already a little challenging).I also rather liked uMatrix's ability to allow scripts while blocking cookies. I know there's not necessarily a privacy benefit to blocking cookies but allowing XMLHttpRequests, but I prefer to do it when possible, just on the off chance it helps.
On the other hand, the cloud sync option for synchronizing rulesets is really nice. I use Firefox Sync already, but redoing the same rule exceptions for the same sites on different browsers was always annoying for me.
I'll see how things go. Thanks for the push to give uBlock Origin another go!
That helps. Thanks!
The cookie stuff is gone but iirc most browsers block 3p anyway nowadays.
The selective blocking works exactly that way
You go on example.com and it lists you all domains which it would've made a connection to.
The first column is the global one the second site local. An allow and block column each. If you have blocked all 3p resources it'll block both. But you can just enable cdn.jquery.com for that site. This is only temporary until you press the lock icon for persisting.
There is a big list in the interface with all your rules and you can add them there comfortably too.
It's not umatrix but it works well and is supported
Edit: as katana mentioned press the ... button on the list if something is collapsed. And of course the more button a few times to get the full list
I use both. Before that I used to use requestpolicy -- I hope something in that vein continues to exist
Weirdly enough, I use both. I love uMatrix, but I like being able to just turn it off for some sites without losing standard blocking.
uBlock Origin, Privacy Badger, Bitwarden, Facebook Purity, and, sniff, RES.
RES was the hardest uninstall. I don't even know why, it just worked and completely transformed the site for the better for what felt like nearly my entire tenure there. I don't know when during my 17 years on reddit that RES began, but it seemed like it always had been after awhile. Was doing a cleanup of bookmarks and extensions after deleting my accounts and there was a bit of sadness in deleting it that did not occur when I deleted my account.
I'm not crying, you're crying.
Checker Plus for Gmail - Great way for me to see incoming emails in multiple inboxes, and mark as read/unread or respond
Nitter Redirect - Automatically redirects twitter links to nitter, an open-source twitter frontend
Open With - quickly open a webpage in another browser
SponsorBlock for YouTube - skips ads and sponsor segments in YouTube videos
uBlock Origin - The best adblocker
Video Speed Controller - Allows you to change the speed of a video, outside the normally allowed range (some slower videos are much better at 3x)
Snap Links - Lets you draw a rectangle and opens all links inside. Great for checking out a list of links, like the links in this comment, for example
I recently switched from Nitter Redirect to LibRedirect. It has support for more websites, an easy interface and extra features like pinging and selecting different instances. I really like it.
Looks awesome, thanks!
You're welcome :D
Your recommendation of Snap Links also sounds really solid! I will give it a spin, thanks!
I have never heard of Snap Links before, that is super cool! One question though, when I try to use it on Tildes, it seems to just move the content around on the page instead of drawing the box. Any idea what's up?
Linkclump on chrome is an alternative if you want to try that.
I noticed that too, and it's really strange -- this is the only website I've seen that behavior on. Not sure what's causing that.
I LOVE Video Speed Controller, even if just for the fact that it lets you set a default speed for videos rather than having to choose every time. I watch everything on 2X (except for music), and sometimes have to go up to 3X for certain things. It's also fun to listen to something at high speed for a bit, then hit the "off" key and drop it down to 1X to make the speaker sound like they're drunk.
Just a couple days ago I had to copy 20+ links one by one because they were hyperlinked in the text and I was wondering if there was a better way. You just solved that with snap links!
Wow, that’s a really good list.
Snap Links sounds really useful, though I feel like I’d get halfway through opening multiple links before remembering that I have an extension for it.
Besides the obvious ones like uBlock Origin and such, I also use:
Thanks for mentioning Consent-O-Matic, didn't know such a thing was available! I think it's great that GDPR is forcing websites to be more transparent about their cookies, but the way they go about it is so annoying.
They're basically malicious compliance. The GDPR states that tracking and collection of PII requires informed consent, and it also says that you cannot require consent for anything that is not directly necessary to render the expected services. So the sites that started this practice are intentionally making it aggravating and expecting that most people will just blindly agree (which might not hold up, legally, but I don't know that it's been tested yet).
Then smaller sites cargo cult the practice, even in cases where they don't use invasive tracking or advertisement practices.
I found a website that followed this trend, despite not having any cookies at all. It does not even remember that you accepted their cookies so it will ask you to accept them again every time you load the home page
Does consent-o-matic work on mobile? Truthfully, Github kind of has always scared me, but the instructions seem manageable for this one. I just don't want to start and not know if it didn't work because of user error or because it's the mobile browser.
There's also links to the browser specific extension pages in the description, when you try to install it from there it should tell you if it will work with your mobile browser.
Ghostery, an already excellent addon, now also does the same as Consent-O-Matic. Just in case someone was not aware.
In the same vein as Consent-O-Matic I use I don't care about cookies. I also pair this with Cookie AutoDelete so that cookies are removed when I close a tab.
I would suggest migrating to "I still don't care about cookies" its the community-led version after the original was acquired by Avast.
Consent-O-Matic is absolutely one of the better extensions I've added to my browser lately. It feels great every time it handles any cookie form for me.
uBlock Origin
NoScript
Ghostery
Those 3 mean ZERO malware problems for the last few years.
Outside of that protection, I use KEEPA for tracking Amazon prices, ColumnCopy/CopyTables, & youtube NonStop.
Also, thanks for making me look ... I guess I need to uninstall RES.
R.I.P.. 🥲
Shoutout to the people that maintained it all these years though
Is this just because you guys are permanently leaving reddit? RES should still work.
Just so you know, ghostery isn't totally free of drama. Privacy Badger does the same thing, but written by the very trustworthy EFF who won't do anything weird with your data. It's also is FOSS!
One additional benefit, is that it uses heuristics instead of a blocklist to detect trackers, so this makes it more adaptable to an every growing web.
I believe that privacy badger now also only uses a blocklist.
Huh TIL they changed it. I did look it up though and they basically said that it uses one by default as heuristically searching also gives your browser a more identifiable fingerprint (although it's already identifiable if you're using a whole cocktail of addons.
You can however go to the settings page, and make the decision continue using the heuristic method. This is also more likely to pick up new stuff before the blocklist catches it. Ofc it'll eventually be added to the blocklist anyway, so it's just down to personal preference.
Just uninstalled RES because of this comment
I basically only have Ublock Origin and Multi-Account Containers installed.
I really like Multi-Account Containers because I can set up individual containers for certain sites to further isolate cookies from each other.
Multi-Account Containers are also great when your internship and school email both use the same Exchange website, so normally you'd have to log out of one to access the other. With MAC, I can have both up at once, each in its own container.
You can double check with the live demo on fingerprint.com but these might be useful too:
Canvas Blocker: https://chrome.google.com/webstore/detail/canvas-blocker-fingerprin/nomnklagbgmgghhjidfhnoelnjfndfpd
Decentraleyes: https://chrome.google.com/webstore/detail/decentraleyes/ldpochfccmkkmhdbclfhpagapcfdljkj
I was able to get different IDs with these extensions
Heads up, this is native in Firefox, no need for the extension. Came to that realization myself a few months back.
It is, but the extension extends the functionality by specifying URLs that you always want to open in specific containers. So if I navigate to
amazon.com, it'll automatically open the page in my Amazon container.Let me introduce you to DeArrow. It's a crowdsourced anti-clickbait title and thumbnail extension from the SponsorBlock dev. Though, there aren't yet that many contributions, and still some bugs and performance issues to fix.
Try to keep it light, since I don't want the browser lagging.
Check out sideberry. It's tree style tabs on steroids.
I used to be a Tree Style Tab preacher and then I tried this hot new
religionextension and now I'm a convert.Joke apart, it has a cleaner feeling out of the box (both in behavior and appearance) than TST. I do miss the companion extension TST Colored Tab though.
I used Sideberry for a long time but in the end went back to TST just because sideberry was overkill for my needs and there was a bug that would ungroup my tabs when I started Firefox some times.
I still think Sideberry is awesome and recommend whenever I can.
Some sort of tab groups is a must for me. Hopefully Mozilla will reconsider removing them now that Chrome and Edge has them. I gave Tree-style Tabs a go when they were removed from Firefox, but it didn't quite suit my workflow. These days I use Simple Tab Groups.
Recently I discovered a extension called Fireshot. It captures webpages and save in multiple ways. I love it since I like to archive some webpages. I had trouble with that for a long time but since I discovered this extension I got to solved this issue 99% of the times
The other would be uBlock origin but almost everyone already knows this one. I fear the day that this extension wont work anymore, if this day ever comes.
SingleFile is also pretty good that serves the same purpose as Fireshot, but it's open source.
SingleFile was the the previous extension I was using for that and I used a lot. But I changed to fireshot because I prefer to have my archives in PDF. Nonetheless SingleFile is indeed pretty good.
Adblockers and tracker stoppers, to start. I love PushBullet as well. I can send and receive texts, or send links to my phone and send them to whoever I want or save them.
I have been using Vimium for many years, first on Chrome and now on Firefox. It emulates Vim-like keybindings. I can't imagine browsing the web without it on desktop. Keyboard centric navigation is so satisfying.
I'm just glad everyone finally settled on vimium. We had vimperator which was my (the?) first. Big falling out, loads of forks everywhere. I used several but pentadactyl won out.
History repeated, forks everywhere, total mess. Until for whatever reason everyone settled on vimium. I think I went through over a dozen vimperator forks until vimium calmed us all down.
I didn't contribute to any of the development so its a bit rich me mocking its history. But a vim browser extension is a battlefield too far even for me, a veteran of the editor wars.
I can't stop giggling imagining that. We nerds really do like our principles.
I was active in the vimperator IRC channel. When turmoil hit, I was told my friends to join the new real channel. Which then all fell apart, and then another real channel etc etc. till pentadactyl. Same thing happened on IRC with it. It was bizarre there were people being properly aggressive over the whole thing and accusing people using "that extension" as being immoral.
I just sort of followed the flow until vimium created true stability.
Pentadactyl died when Firefox switched to only supporting chrome-style webextensions (of which vimium was the best I assume). For a more pentadactyl-inspired webextension, there's tridactyl. It has a command language that's much more powerful than vimium, but it's probably overkill for many.
The vast majority of extensions were ported with full feature parity. But it really sucked for some of the more comprehensive, power user extensions.
For example, the new tab page and other internal browser pages are off limits in today's API. You can't press o to navigate the tab. With vimperator that was my work flow, I'd open a new tab then think about what website domain or search I was going to do with it. Helped from getting distracted by content on a tab. Took me quite a while to adapt.
I understand why they adopted chromes API, and more importantly why they didn't want extensions being able to alter internal pages, but I still miss the raw power it gave.
In the case of tridactyl, it overrides the new tab page with its own, where it functions normally. But yeah, a lot of power was lost for sure.
Yeah when the API transition took place I continued to manually install the older extension. The problem was that it wasn't being regularly maintained and so browser updates would often break it.
I also agreed with Mozilla on the sandbox and security implications. When that extension wasn't being properly supported and you had to manually install it using flags that disabled a whole host of security considerations, it didn't feel like a long term solution.
All that said I still miss vimperator and the forks. You used to be able to completely control the entire browser in only a few keystrokes. Not only that, it exposed functionality and filtering that the GUI could never do no matter how many mouse clicks you wasted.
I'll compile random old packages from the internet to solve a purpose. But they are almost never internet facing. More than that they aren't running within your webbrowser, the overwhelmingly most important attack vector.
Manually installing those packages trusted me to pay attention to security updates. I know myself, I can't be trusted like that. In addition, once the community was forced to move to chrome api based extensions, that code base was abandoned. The already tenuous "many eyes" security ideal evaporated.
It's not really a "battlefield". Just a set of keybinding that kept working consistently for many years. It's a "won" battle. I never experienced any disruption in my use of Vimium, which I have been using for, IDK, a decade?
I don't do anything too complicated either, just a subset of keybindings I find most practical. Not nearly as complicated as actually using Vim.
I'm talking about years before vimium was released. If you have only ever used vimium you won't have seen the messy fun preceding.
Violentmonkey for userscripts. I forget why I settled on Violentmonkey over Tampermonkey and Greasemonkey. I have a couple small userscripts to make a few websites more usable, and here are a couple of my favorite publically accessible ones:
I use my own extension called Just Read (https://addons.mozilla.org/en-US/firefox/addon/just-read-text-to-speech/). All it does is allow me to highlight text and have it read aloud. I struggle with reading long forms of text so it helps a lot.
Didn’t see it mentioned, so I guess I will: I have Reddit Enhancement Sweet (also known as RES). I installed it at some point and it has become the way I see “standard” Reddit. I haven’t really used Reddit as much as I used to since the API announcement, but I plan on pretty much keeping it installed until Reddit kills off its old.reddit.com version.
Outside of that, uBlock Origin, (which has already been mentioned a few times,) and a password manager extension, I also use Augmented Steam which shows historical sale data for games, among other useful tweaks.
uBlock Origin is a must, I use it on every browser that supports it, even Firefox on Android.
DarkReader is my second favorite, it makes every site use a dark theme, and can be quickly turned of for problematic sites.
DarkReader is pretty essential to me. I go between light and dark themes in GNOME and Android depending on time of day and whether I'm in my apartment or at work or in class etc., and I would just always use a light theme if dark theme meant getting flashbanged by the majority of web pages. Spotify not having a light theme anymore is annoying but at least since it's always dark the flashbanging is a non-issue.
As well as uBlock Origin, I use FoxyGestures on desktop Firefox. I only really use it for right-click + mouse wheel to change tab, but a few of the other ones are handy. Occasionally I'll use the right-left click rocker gesture to go back and the "swipe up" gesture to open a new tab.
I use Redirector for work because some internal intranet sites don't redirect qualified domains properly, or changed URLs without leaving redirects. I also block reddit and hackernews with it, to prevent me idly browsing them out of inertia. If I want to do it, I have to at least unblock them first, so it's slightly more effort.
+1 to foxygestures
I haven't used a browser without gestures in like ten years. Once you get used to right-click-mouse-movements then everything else feels tedious and/or slow. Need to close the tab? down+right. Need to refresh the page? up+down. Need to open a link in a new tab? down. Need to scroll back to the top of the page? up. Super easy, intuitive, customizable, absolutely perfect extension.
I catch myself trying to use gestures all the time on things outside of Firefox, like Steam, or the one time a year I need to use Edge for that weird website that doesn't seem to work on any other browser.
edit: oh man thank you for this:
I didn't even know that you could use the mouse wheel as part of the gestures but I just went into the options, set it up, and it works beautifully.
Outside of what's already been recommended, I've gotten a lot of mileage out of Tree Style Tab. Nesting new tabs under the tab they came from has really made navigating any sort of rabbit hole I fall into a whole lot easier, whether it's for work or pleasure.
I'm quite fond of Stylus for tweaking the CSS on various websites. The Tildes wiki has some excellent userstyles for tildes.net.
And of course uBO, as others have mentioned. A must have if you care about your privacy and attention.
For anybody already using Userscripts you can translate from userstyles to userscripts
And that's all I can remember from the top of my head.
I absolutely LOVE Imagus, I seriously cannot imagine browsing without it, being able to look at all images on their own, especially smaller ones is now a must have for me.
I like Firefox Multi-Account Containers. I can keep multiple logins to a given website in separate tabs in my browser. I used to (ab)use private mode for that, but sometimes I want to keep cookies or history for alternate site logins, which private mode doesn't.
I also like TreeTabs. I think here are a few extensions that do similar things. I like having a tree view of the tabs I have opened.
I loved the idea of AdNauseum, and it claims it is built atop ublock origin. I need to test it vs regular ublock but it's pretty cool so far.
I came across LocalCDN a while back and have it running on my phone. I seem to recall that DecentralEyes does something similar, and it is mentioned in another response to this topic.
I am not qualified to speak about how these extensions work or how well they work, but I'd like to learn more and I think it might be informative for others here. Care to expound on this topic?
You tend to get quite a lot of generic and expected answers to these threads, I'll answer two I see little mentioned
Go To Playing Tab if there is a video playing or something playing music, you click the button and it focuses the tab. I can't tell you how many times this has save me searching for some rogue tab spewing the latest free energy solution.
Maximize Video videos played on the internet will lack standard UI, you can't pause, skip back change speed etc. They can also be tiny, limited by the sites design. That addon lets you click the video making it maximise the tab, giving you all the normal UI you'd expect. I use it all the time. It also tends to break any of the nasty click->popup behaviour.
Another solution would be to block audio by default and only allow it from whitelisted sites. As a bonus, it stops websites from loudly explaining how to properly cook chicken.
I quite often watch videos or listen to something from a random website. Then start researching the subject and downloading papers.
Then they will suddenly shift to talking about the electric universe or the equivalent. I'll have thirty tabs open reading real, fascinating research and be desperate to find the tab that has just started "disproving" Maxwell's equations...
Blocking audio wouldn't help those use cases. It is really bizarre how quickly things can turn from real cutting edge science to total pseudoscience woo. The Nobel disease is really widespread.
There are also really nefarious sites that abuse good content. They will have a solid interview with someone that is uniquely insightful. If you leave that tab open while reading around the subject, 30mins later it will start auto-playing some bollocks knowing you have already given them permission.
Go to Playing Tab here's a chromium compatible link.
Thank you for linking to that for others, the first review on there is funny
hahahaha. I feel the same way.
Yea I think this extension should be a standard feature of browsers. Trying to find the speaker icon amongst 50+ tabs is ridiculous
Yeah I really don't understand why it isn't a standard feature. It isn't some form of browser bloat. It is a core usability feature.
Funnily enough, it is a standard feature for Firefox on Linux, at least under Gnome.
Honey - Usually good for doing online shopping. While checking out it will cycle through known Coupon/Discount Codes and other features. But sometimes gets a little invasive.
Return YouTube Dislike - Just becuase
RecipeFilter - Can autofind or compile recipes from most blogs so you don't have to scroll through 7 paragraphs about how they are 1/16th Italian and the time they visited Italy on a long weekend group trip 12 years ago so are the world's foremost leading authority on authentic homecooked Italian food.
I'm not sure how much I trust an extension that has to send all my online shopping habits to a third party
Ghostery
Go back with backspace, because who thought it was a good idea to remove it in the first place
Just dropped into say that I tried Vimium because of you, OP, and holy crap, why did I wait so long? I knew it existed and thought I didn't care. This is magical! Thank you!
Brave user here (with all of the crypto, wallet, NFT stuff disabled). I've been extremely impressed with the browser's privacy features otherwise.
I have a handful of other extensions that aren't quite as interesting (more common), but this sums up some of my favorites.
Bitwarden: It's a free password manager that's accessible across multiple devices.
Dark Reader: Gives any website a dark mode. Some sites come out wonky, but you can just click the extention to disable it for that specific site easily enough.
Fakespot: Analyzes user reviews to tell you how many of them are fake for a given product.
+1 on Dark Reader. Takes a bit of work to customize an individual site (to ensure you are changing settings for that site only) but once you do, the dark screen light text is so much easier on the eyes (especially the getting older eyes).
Is anyone else just unable to survive without "Copy Link Text"?
https://addons.mozilla.org/en-US/firefox/addon/copy-link-text-webextension/
The following are my must haves for me:
uBlock Origin: Ad and malware blocker.
Containers: Allows you to create "containers" so cookies and site data is isolated to a specific "container" (ex. banking, shopping, etc.)
DecentralEyes: Localizes requests for common libraries loading from various CDNs like Google, MaxCDN, JSdelivr, etc.
DuckDuckGo Privacy Essentials: Let's you create email addresses that forward to your main email address that you can deactivate/reactivate at any time to avoid things like spam or using email addresses for data warehousing purposes.
I use a password manager, but I intentionally do not install the browser plug-in in order to reduce the number of attack vectors.
None. I browse without plugins/addons.
No. For adblock I use a private dns.
Could be using Brave
OP and I run a very similar setup. I feel lost any time I use a browser that doesn’t have Vimium (or in my case Vimium C) installed. It’s actually outlasted my use of Vim. I also run SponsorBlock, and uBlock Origin.
A long-time favorite of mine I don't see mentioned yet is Google Dictionary. I simply double click any plaintext word I don't know and get a definition, if it's easy for Google to find. :) I think I've had it installed as long as extensions have existed.
My Safari iOS List
Blockebear: A simple blocker that runs on EasyList. The app itself no longer maintained but I’m not sure that matters.
Hush!: Blocks cookie consent forms from loading, where possible. (It does not click on or accept/deny cookies. Just tries to stop the form from loading by blocking scripts).
Banish: Stops ‘use in app’ / ‘this looks better in our app’ banners.
I'm replying ~2 weeks after this was posted (which is still very recent). This post turns up quickly via search and was useful to me. I wanted to add to the contributions here. I did not include extensions I use that have already been mentioned by someone previously on this post.
Absolutely "noscript", which even works in the vanilla android Firefox. After browsing the internet with that on, I have a hard time ever going back to letting every random website use Java script to their hearts content. It's to the point where I'll never consider using an Iphone purely because you can't install extensions on Firefox in the walled garden.
Unlock origin also feels mandatory for most websites these days when ads are often a vector for malware.
As someone who wants a dark mode on literally everything, "darkreader" is amazing for making every website have a dark mode. It can be wonky sometimes when it tries to invert the colors around images with transparency. Also, I think the little icon for it is supposed to be Darth Vader!
MarkDownload to easily capture some text on a webpage that I can then easily paste into my Markdown-based note-taking app, or to insert a formatted quote with links in a comment.
Readup
Mostly so I can post the articles I read to Readup and comment on them. But the reading progression tracking is neat when I want to continue reading an article on a different device, and basically a must-have on Android where Firefox tends to reload when I switch between apps or tabs.
My favorites have already been mentioned in the thread, but I wanted to make it a point to say that two of them (uBlock Origin and Dark Reader) work on Firefox for Android and that makes it a much, much better experience than Chrome for me. I haven't intentionally opened Chrome on my phone in ages.
I use 1Blocker. I only use it on iOS, but I think it’s available for desktop too. I’ve used it for years and it’s highly customisable - I don’t think I’ve come across a site I haven’t been able to get it to work with (with some customisation) yet.
I'll add my favorites that don't seem as common:
Unhook - Cleans up Youtube UI to show only the most basic components (search and results). Hides features I don't want.
Vimium - VIM commands in browser. Makes browsing without a keyboard much easier.
Multiaccount containers - Logical containers/cookie barrier for different categories of sites (banking, social, etc).
SponserBlock - Crowd sourced metadata to skip portions of youtube videos that are not relevant.
Ublock Origin Forget Youtube Ads
Windscribe Sometimes need a location change. Its free till 5GB
Privacy Badger Ofcourse Blocking Trackers
Bitwarden For loggin via saved passwords
Multi Account Containers Helps in using multiple logins in same site. Way other use cases as well
ClearURLs Removes Tracking elements
Tabliss Makes the homepage beautiful
Some other am gonna check from the comments are Sponsorblock
I'll add the Google Scholar Button which is a bit timesaver for me when doing research.
uBlockOrigin, Decentraleyes, LibRedirect (mainly to redirect twitter to nittter), Stylus (dark themes everywhere)
Foxy gestures - I've been using mouse gestures in Firefox for ages and couldn't live without them anymore.
Feedbro - great RSS reader for blogs, youtube, mastodon, etc.
Media URL Timestamper - adds a button in the URL bar to add a timestamp to the URL at the current position in YT or twitch videos. Great to pause and bookmark longer videos.
Default Bookmark Folder - to configure a dedicated 'Inbox'-folder for all bookmarks