What are your favourite extensions?

Dark Reader: Especially late at night white page background just burns out my retinas, no idea how I ever managed before.

Tab Snooze - allows you to close a tab and have it reappear at a chosen time later

Media URL Timestamper - automatically inserts the current timestamp of the YouTube/Twitch video you're watching and updates it in the history in case you accidentally close/navigate away from the page or go to a different time in the video

Feedbro - RSS reader with filtering capabilities

Redirector - auto-redirect specific URLs (for example, changing a YouTube Shorts url into a regular one, or changing Reddit links to always go to Old Reddit)

Undo Close Tab Button - allows you to restore recently closed tabs including the tab's history in the back button (max amount = browser.sessionstore.max_tabs_undo)

Violentmonkey - using userscripts that allow you to change things on websites.

• For Instagram - unmuting videos + setting their default volume
• For YouTube - disabling the subtitles/captions + disabling "autoplay next" for playlists + disabling autoplay of channels homepage video
  • a way to disable specific keyboard shortcuts (you need to manually add the code as a new script). I use /^(Key)?(End|I|O)|(Digit|Numpad)\d$/ instead of /^(?:Digit|Numpad)\d$/ (thanks to this post), to also disable the End/I/O keys in addition to the number keys.
• Note that, at least for Violentmonkey, if the userscript doesn't have the "://" part of the url in the @match line then you need to add it in the userscript settings after installing the script (for example, if the @match line of the script only has *.youtube.com/* then put *://*.youtube.com/* in the "@match rules" line in the settings)

YouTube Comment Reader - allows you to search through the comments of a video (by clicking on the addon in the Extension menu and then clicking on the "YouTube Comment Reader" at the top or the "X Comments" at the bottom of the tooltip)

Page Shadow - allows you to use dark and light themes on sites that don't have the option to change it.

And if you're like me and you find that some YT videos feel too slow but 1.25x is too fast, then you can use Enhancer for YouTube's "Playback speed" feature to have smaller speed steps. Then you can hold ctrl and use the scrollwheel (while over the video) to change the video's speed by the amount you chose (I use 0.05 speed variation, mostly changing to 1.05x or 1.10x)

Consent-o-matic !

Aside from the standard one's I see:
Streaming enhanced: Netflix Disney+ Prime Video

Automatically skip Ads, Intros, Credits and add Speed Control, etc. on Netflix, Prime video, Disney+, Crunchyroll and HBO max.

Ublock origin, Sponsor block, and NoScript

• Augmented Steam - sales on other platforms and whatnot
• BetterTV - emojis and whatnot on Twitch and YouTube
• Bitwarden
• Easy Container Shortcuts - makes container tabs nice to work with
• Multi-Account containers
• Steam Economy Enhancer - installed w/ Violentmonkey script manager; bulk sell Steam trading cards

And of course uBlock Origin. :)

Haven't seen anyone mention Decentraleyes yet. Serves CDN assets locally to avoid CDNs as a vector for tracking or fingerprinting.

• Ublock Origin: No brainer. You can block just about every intrusive component of the modern internet with just this.
• Stylus: Write CSS themes for websites
• User-Agent Manager: For compatibility purposes, switch your user-agent to chromium on some websites
• Libredirect
• ClearURLs: Copy links without tracking or affiliation
• Dark Reader: Dark mode everywhere
• Temporary Containers: Provides some nifty shortcuts and features for creating temporary containers

Didn’t see it mentioned — SingleFile is an awesome tool to save the whole page as a single compatible with everything HTML file with embedded css and images.

I use these ones frequently:

• Quick Currency Converter - I'm interested in a better currency converter, its UI is not nice, but otherwise usable, and I couldn't find a better one
• Open Page in Private Window - Adds button to rightclick menu
• Want My RSS - RSS button in the url bar
• Viewhance - better image viewer, zoom with scroll wheel, etc
• TWP - Translate Web Pages - Like the built in translator, but online only, works with more languages, translate selection in rightclick menu
• PersistentPin - I don't know why FF forgets pinned pages, but this solves that

Some of my picks to add to all other comments

• Gesturefy: Mouse gesture addon. It can also run custom javascript. For example I have a script that makes copying text, links, buttons easier.
• Imagus mod: Hover zoom addon with up-to-date sieves that actually work. The sieve team is quite good.
• BetterViewer: Image viewer although some buttons don't work on firefox.
• Fastforward: circumvents annoying link shorteners
• Distill: Monitor webpage or feed for changes

I also have many ***monkey and stylus scripts.

For me, it's many of the ones people have already said, plus:

• StreetPass (seriously cool - collects the mastodon profile of any website you visit where someone has set up the special link to their profile)
• Video Speed Controller (gives you fine-grained control over video speed, e.g. watching video at 2.6x speed)
• Privacy redirect (automatically redirects to various services, e.g. from Twitter to Nitter - can select a random instance each time)

Not on mobile but on desktop Firefox Multi-Account Containers paired with Temporary Containers is a funcking godsend. Especially so when I'm doing web dev work.
Other that that uBlock is pretty high on the list as usuall.

Cloud to butt

I've been using it for such a long time. It's only on my PC. I don't use my PC for much anymore, so when I see the word "butt" when it should say "cloud," I get a little chuckle.

The usual +

• Stylus with a global dark user style

I think it's more performant and lightweight than dark reader. So I get more screentime.

Sieberry, it's what Mozilla is unable to do, nice looking and working vertical tabs.

Simple Translate is nice too just mark a text and instant translation.

I still don't care about cookies, yeah just leave me alone.

Scroll everywhere, right Click to scroll any page. Should be vanilla feature.

Keepa, for amazon price history of any product.

• LocalCDN
• HTTP Version Indicator

Apart from what everyone already posted:

• Boring RSS - displays an rss icon in address bar with the rss feeds from the current page's head tag - the cool thing is that unlike other addons like this, this one has only the activeTab permission, rather than "access your data for all sites" - https://addons.mozilla.org/pl/firefox/addon/boring-rss

• uBlacklist - hides some pages from search engine search results (I use it to hide reddit) - https://github.com/iorate/ublacklist
• Tridactyl - like Surfingkeys, Vimium etc. - more vimlike experience for Firefox - you can also optionally install a native extension to run shell commands in the os from within ff (yeah dangerous): https://github.com/tridactyl/tridactyl

My favourites are:

• ProtonPass
• DarkReader
• uBlock Origin
• Privacy Badger
• Multi-account containers
• Joplin (to save pages to my local Joplin notes)

• Vimium
• Redirector

(And OFC all the other great ones, Dark Reader, Chameleon, NoScript, AdBlocker Ultimate.)

ClearURLs

It makes, say, Amazon links not a three-page bookwork

Ublock Origin, NoScript, Chameleon, Libredirect, DarkReader, OneTab, Stack Overflow Prettifier, Classic Mode For Wikipedia, Vimium

Must haves IMHO:

uBlock Origin Consent-o-Matic

Making life easier:

SponsorBlock Enhancer for YouTube DarkReader Multi Account Containers

enhanced-h264ify prevents my PC from cooking itself when playing YT.

Dark Reader is sort of annoying to set up, but I like it. It would be better if you could choose to share your location with it rather than inputting your lat/long manually. (It's possible that's a limitation of extensions though.)

I use the DDG extension too but it's caused problems by blocking a webpage on localhost for some reason. Not sure what it does that uBO and Privacy Badger cannot.

I haven't used https://adnauseam.io/ but I like the idea of it. I stick with uBO and use AdGuard's public DNS in my router (too lazy to set up pihole).

Not trying to hijack this post but does anyone know of an add-on that syncs your bookmarks toolbar? Its the only thing holding me back from being fully on librewolf.

uBlock Origin (this is the real one) uBlacklist (this blocks sites from your search results)

Gesturefy: It brings the mouse gesture functionality known from Opera to Firefox.

Since it's not mentioned before, check out DeArrow. It makes YouTube bearable.

Chameleon. My user agent changes every 30 seconds. Makes attempts to track me basically useless.

Bitwarden. Hands down the best decision I made in regards to web safety was switching to a proper password manager.

Close second is uBlock Origin.

Also make sure to use DecentralEyes for easy enhanced privacy.

I use NoScript, but that level of granular control isn't everyone's cup of tea

• Sponsorblock
• uBlock Origin
• I still don't care about cookies
• Augmented Steam
• BetterTTV
• YouTube Shorts Redirect
• Gumbo
• Bitwarden

These are all the extension I have installed and they are all my favourite tbh. I also have Firefox set to use strongest protection.

uBlock Origin and DarkReader

Recently got into using RSS feeds, so RSSHub Radar was quite useful
Search by Image is good too

• Ublock
• Dark Reader
• Libredirect
• augmented steam
• proton pass

• uBlock Origin
• Dark Reader
• Indie Wiki Buddy
• Reverse Image Search
• LibRedirect

Indie wiki buddy. Fandom often times comes on top for most searches, but many games actually have their official wikis elsewhere. This extension hides fandom links for unofficial fandom wikis.

I often use:

Not on mobile, but desktop:

• Enhancer for YouTube, I like it for having the “expand” making the screen bigger also cinema mode, toggling end cards off, boost volume — you can also take screenshots.

• uBlock Origin, of course

• SponsorBlock, which is a big extension that will auto skip sponsor readouts, selfpromos, and a lot of things YouTubers often do (sponsors, self promos, interaction reminders like liking and subscribing, intermissions, intros, previews, jokes, etc - you can choose to skip them or highlight them in the videos) it’s backed by community response, anyone with the extension can set up something to skip and share with everyone. Highly recommend if you’re tired of people pausing the video to talk about raycons or manscaped lol

Making a note to myself about Sponsorblock and chameleon

I thought you could only select from a pre-defined list of addons in Firefox mobile?

I may be biased, but I like Lemmy Infinite Scroller. It started out as a 20 minute project just as a proof of concept and then evolved into me trying to make an infinite scroller that works really well. It works well, I can't recall if I made it open-source but I didn't obfuscate the code or anything like that so it's practically open-source anyway even if I didn't make a repo for it. I just published the manifest v3 update of it last week so it's pretty futureproof too.

Other obvious extensions are uBlock Origin, uMatrix, and surprisingly one called Dark Background and Light Text (though Dark Reader is also cool too).

• uBlock
• Privacy Badger
• Language tools (spell checker)
• Mal-Sync (automatically updates Anime & Manga progress with MAL, AniList, Kitsu etc. Supports Netflix, Prime and some high seas website)

• Stylus - I use it to apply some css to make youtube thumbnails smaller because the new huge ones drive me insane
• Plasma Integration - Pretty self explanatory, just makes firefox better integrated with plasma
• SponsorBlock
• UltraWideo - useful for weird content with baked in letterboxing or pillaring

Highlight or Hide Search Engine Results

i still use google, so being able to filter out the blogspam and fandom slop is a godsend for usability

Fakespot for amazon/ebay reviews