Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
HTTPS Everywhere
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
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Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
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Adblock Plus
Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
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uBlock Origin
بالاخره، یک بلاکر کارآمد. کم حجم بر روی پردازنده و حافظه
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Enhancer for YouTube™
Tons of features to improve your user experience on YouTube™.
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SoundFixer
Lets you fix annoying sound problems in YouTube videos and such. Like audio in one channel only, too quiet or too loud. (Unfortunately, doesn't work on many other websites because of cross-domain issues — but it does work on YouTube.com!)
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YouTube High Definition
YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.
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Video Speed Controller
Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
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Wikiwand: Wikipedia Modernized
Good old Wikipedia gets a great new look
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Wikipedia Peek
Shows previews of linked articles on Wikipedia pages.
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Wikipedia Context Menu Search
Search for highlighted text on Wikipedia via the context menu.
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Random Unusual Wikipedia new tab
Redirects to a random unusual Wikipedia page when you open a new tab, because when you're opening a new tab you're looking for a distraction and that distraction might as well be a weird fact. Or show random Cognitive Bias, or Philosophical concept.
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New Tab Override (WebExtension)
New Tab Override brings back the ability to change the page which is shown when opening a new tab.
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Tree Style Tab
Show tabs like a tree.
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Tab Auto Refresh
Automatically refresh tabs based on custom time intervals
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OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
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