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Free extensions for Firefox-based browsers

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ouo.io ouo.press autoclick

Automatically clicks the “Captcha” and Download buttons on ouo.io and ouo.press.

ReloadTabByMidClick

Reload tab by double middle clicking anywhere on the page.

Enable Select Copy +Edit

A toolbar button to enable selection, copy and typing editing web text redirectly in a tab

Video Seek

Allows you to seek through videos on supported sites with the mouse wheel

RedBubble Tags

A very helpful tool for RedBubble Tags copying

Duolingo Dark Mode

Dark mode for Duolingo

Bullet Journal

Note taking extension to jot down quick thoughts or to save longer notes.

Twitch VOD Downloader and Viewer

View and Download Twitch VOD Segments

Search Enhancement

Adds links to Reddit, Wikipedia, Twitter search sections directly on Google's search result page

CostHelpers.com - Deals on popular products

We have a dedicated team that works hard every day keeping up to date on the latest product trends, as well as finding the best online price for those products.

BrowserGT

Have Chrome-like group tabs in firefox

Unwanted Opinions

Lets you block tweets using various options.

Reverse Image Search

Adds an option to the context menu to reverse search an image on various services.

Fix Udemy

Fixes Udemy video playback speed not saving between videos, this extension will store your speed preferences for each instructor and properly reload with that speed on all videos

Just Another Redirector

Adds buttons to certain websites (currently Twitter, YouTube and Reddit) to redirect them to alternative frontends (like Nitter, Piped and Teddit).

Copy as PNG

Right click any image on the internet to copy it as a universally-supported PNG file, regardless of what format it was originally served in!

Note Sidebar for Firefox

Simple note sidebar which can be used to write a note, record thoughts, to-do list, meeting notes, etc.

Mastodon4 Redirect

Redirects users from Mastodon4 supported instances to their home instance

Not Searching For That

Removes Google's annoying “People also search for” box.

Uthrive: Maximize rewards

Automatically use your best credit card to get maximum rewards and cashback

kde-activities-z

When a new firefox tab is created from clicking a link outside the firefox window, this extension will move the new tab to the current kde activity automatically.

Tell Request

Provide guided narratives for your code change requests

MB_Solver

MultiBot: Auto Solve Captchas

Steam.Supply's Extension

Improves experience on Steam.Supply & Display trade details on steam

Close Tabs Hotkeys

Adds keyboard shortcuts 'Close Other Tabs ', 'Close Tabs to Left ' and 'Close Tabs to Right'.

uOTP

A simple OTP manager that doesn't require your data. All credentials are securely saved with a master password.

Treasure Chest

An (unofficial) chest of tools for making the Treasury Direct website easier to use.

TST insert as next root sibling

Modifies TreeStyleTab extension new tab behavior to put the new tab as the next root sibling in the tree.

Ambient Mode Blocker

Ambient Mode Blocker automatically turns off Ambient mode on Youtube in the background.

Exv Test Extension

OneID@Adapter Extension for form-based authentication.