10
votes
Open source Firefox add-on to take screenshot of whole page
You can already do it with Firefox:
Press F12
Click on settings
Enable full-page screenshot
Now you can always click on that camera icon and the screenshot will be saved to your Downloads folder
9
votes
Firefox add-on that suspends inactive tabs, to use less memory
There are several options:
Auto Tab Discard (Compatible with Firefox Quantum)
Use native tab discard method to automatically reduce memory usage of inactive tabs.
One Tab (Compatible with Firefox ...
7
votes
Alternative to Ghostery (tracker-blocker) add-on for Firefox?
First, Ghostery is made by Ghostery Inc. an ad company. I'm sure their research is respectful but it is good to know about it at least.
I would try Privacy Badger made by EFF. The way it works is ...
7
votes
Accepted
Firefox extension to hide some elements permanently
Check out the uBlock Origin ad blocker add-on. You can choose to block addons using the element picker tool, or just right click the element > Block element and then adjust the sliders and follow ...
6
votes
Accepted
Firefox add-on to store custom CSS on specific websites
There is another add-on called Stylus which is a Stylish fork for Firefox, Chrome and Opera without analytics.
I wanted to update the answer to this question, because as of August 2017, Stylish has ...
5
votes
Firefox extension to copy the title and URL of the page to the clipboard
I recommend Copy Urls Expert, a good balance in terms of customization and ease of use.
I needed a Firefox extension that could copy the web address (URL) of each tab into the system clipboard. Copy ...
5
votes
Accepted
Mozilla Firefox extension for night reading?
You may also want to try Owl, a light add-on built specifically for this purpose, and very much Dark Reader for Chrome.
(Disclaimer: I also happen to be the developer of this [and other] add-ons)
5
votes
Accepted
Is there a dark mode browser extension that works in an opt-in way?
Dark Reader
It's available for both Firefox and Chrome
Use Invert listed only if you wish Dark Reader to work only on listed websites.
https://darkreader.org/help/en/#site-list
4
votes
Mozilla Firefox extension for night reading?
You could use Stylish (FF) --- Chrome and install user styles built for darkness. I'm personally using a few 'skins' on Firefox and Pale Moon. Some sites are a bit buggy and require you to exclude ...
4
votes
Accepted
Firefox addon to block attempts to make text unselectable?
https://addons.mozilla.org/firefox/addon/righttoclick/
Stops javascript annoyances such as forbidden right click, forbidden text selection or disabled features like copy/save images from web-pages.
...
4
votes
Firefox bookmark manager with two panes
At this time, there is the Bookmarks Commander github repo here
for Mozilla Firefox
for Google Chrome
4
votes
Equivalent to NoScript for Firefox Quantum
You could try uMatrix which offers all that NoScript has, but even more granular. That means a little learning (dealing with uMatrix is a bit different), but also more flexibility. To give you an idea,...

Izzy♦
- 18.9k
4
votes
Accepted
Firefox add-on that suspends inactive tabs, to use less memory
Tab Suspender (memory saver) seems to be a pretty good alternative.
4
votes
Accepted
Download Router extension for Firefox web browser
You can safely dump Chrome... allow me to introduce you to Firefox's Save In... extension.
The summary on AMO is well written:
Adds a context menu to save media {image, video, audio, link, ...
4
votes
Accepted
Firefox or Chrome extension that clicks on webpage links with the keyboard (no mouse involved)
The Vimium C Web Extension by Dahan Gong has been updated more recently than other similar extensions (it was just updated 4 days ago).
Description from Mozilla's Firefox Add-ons Site (AMO):
...
4
votes
Separating work and personal tabs in Firefox
The standard solution from Firefox to isolate work and home tabs is to use first party isolation which separates cookies and local storage for different set of tabs. But that doesn't seems to be what ...
3
votes
Firefox extension to use multiple Stack Exchange accounts
As of Firefox 57 AKA Firefox Quantum, installing the Firefox Multi-Account Containers extension (developed by Mozilla) will allow you to use multiple accounts for Stack Exchange and other websites, ...
3
votes
Mozilla Firefox extension for night reading?
You can install Dark Reader for Firefox. It makes exact the same dark themes as Dark Reader for Chrome.
3
votes
Is there a Firefox utility that can convert webpages to PDF?
You can use the FireFox add-in WebToPDF which will generate a PDF from a webpage. Just right click on page and generate PDF for webpage. It will also include any invisible areas.
3
votes
Simple method to store additional set of bookmarks for Firefox browser
When I read your requirements correctly, a combination of two Firefox addons could do the job:
Markdown Editor allows you to open/create, edit, and save Markdown documents – using a syntax you're ...

Izzy♦
- 18.9k
3
votes
Firefox extension to copy the title and URL of the page to the clipboard
As my answer with CoLT is only valid for Firefox < v57 (and CoLT won't be maintained anymore), a good replacement is Format Link: excellent support by the dev.
Again, no Ctrl-C directly on the ...

Izzy♦
- 18.9k
3
votes
Accepted
Firefox add-on to hide a window on a selected day
Better than an add-on, I suggest you use Firefox's built-in "Profile" feature.
Use one profile for workdays, and one profile for weekend.
First, configure Firefox to reopen last session's tabs. Then ...
3
votes
Accepted
Task Switcher for Windows & Browser Tabs
I have a setup that does this that I use every day.
I see the problem as MRU or spatial are not going to work once the windows+tabs get above around 10. At that point you need symbolic.
The real ...
3
votes
Pause YouTube video without having to switch to its Firefox tab
Play/Pause is a minimalistic Firefox extension that just adds a Play/Pause button to YouTube video tabs.
License: MIT
Source code: https://github.com/DanielKamkha/PlayPauseFirefox
3
votes
Firefox extension to remove " - Wikipedia, the free encyclopedia" from page title
The Greasemonkey Firefox addon would enable you to do that. Greasemonkey lets you run "UserScripts" to be run on the page source, in order to modify it.1
1:Further details can be found at the ...

Izzy♦
- 18.9k
3
votes
Virtual PDF printer to print from Firefox
This one has always worked good for me
http://www.pdfforge.org/pdfcreator
3
votes
Accepted
looking for you tube video downloder app
Not sure about flash videos as they may contain active content but a great tool is youtube-dl which runs under python it also can require one of FFMPEG/AVCONV for some operations.
Windows ...
3
votes
Accepted
Flashgot alternative for Firefox quantum
I downloaded this
https://slgobinath.github.io/uget-chrome-wrapper/
wget https://raw.githubusercontent.com/slgobinath/uget-chrome-wrapper/master/build/linux/install_uget_chrome_wrapper.sh
sudo sh ...
3
votes
Accepted
Grammar checker extension for Firefox
You should check out Grammarly they have plugins for FireFox, Chrome, Outlook and Word.
They also have free and paid plans.
2
votes
Firefox: Alternative to Googlebar for other search engines?
In case anyone is still in need for some support in locale searching:
I am using "SearchWP" for many years now. It was last updated in 2016 but that does not matter.
It is a neat little add-on which ...
Only top scored, non community-wiki answers of a minimum length are eligible
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