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Questions tagged [firefox-quantum]

For questions specific to Firefox Quantum. Use [firefox] instead for questions involving Firefox in general.

1 vote
1 answer
103 views

Firefox: how to copy URLs to clipboard with parenthesis as encoded characters, e.g. '(' as '%28' and ')' as '%29'?

I am using Firefox 119.0 (64-bit) on Fedora 38. I would like to be able to copy a links that contain parenthesis to clipboard from the address bar with them as encoded. For example, when copying the ...
zpangwin's user avatar
  • 193
4 votes
1 answer
2k views

Automate a periodical "Minimize Memory usage" on Firefox

During many years using Firefox and forks and I've realized that sometimes Firefox gets slow and sometimes unresponsive. Workaround, going to about:memory, and clicking on "Measure" button ...
Daniel Perez's user avatar
0 votes
1 answer
186 views

How to Set A secondary Debugging software in Windows 10 TaskManager Debug

I would like to know if there is a way to add a secondary debugging software, to the right click context menu of the TaskManager, Prefferably SublimeText Editor 3, or any other similar software, ...
Ryan Stone's user avatar
1 vote
1 answer
460 views

Programmatically close all tabs in Firefox Quantum

1. Summary I can't find, how I can close all tabs in Firefox Quantum without any manual mouse clicks. 2. Details (Details for preventing XY Problem) I am working on several projects. I need always ...
Саша Черных's user avatar
0 votes
1 answer
90 views

Meaning of the notification Firefox seems slow to start?

Hi Firefox experts, When launching Firefox, it sometimes displays at the bottom a notification saying "Mozilla Firefox seems slow... to... start." Is this an official notification type within ...
johnsmiththelird's user avatar
1 vote
1 answer
317 views

Firefox v73.0b1 about:config stopped supporting filtering in address bar

Before version 73.0b1 it was possible to filter about:config by entering in address bar: about:config?filter=browser After latest update to 73.0b1 this does not work any more. No preferences shown ...
Primer's user avatar
  • 113
0 votes
1 answer
38 views

how to use ctrl + 1 to switch to previous tab in firefox?

I'm using firefox 71 in mac os, i'd like to use ctrl+1 to switch to previous tab rather than command+shift+tab, how to achieve this? i tried an add-on called custom key but not working, i also tried ...
user956609's user avatar
4 votes
1 answer
558 views

How to stop Firefox searching Amazon and other "Top Sites"

Today I discovered a Firefox feature that allows you to search within particular sites by prepending the search term with an @: This seems like an implementation of the similar Chrome behaviour, ...
Hashim Aziz's user avatar
0 votes
1 answer
536 views

How to import passwords from FF profile into another profile w/o overwriting files/existing passwords

Situation Set up a new workstation. I did not continue the old OS (Windows) installation, but instead started fresh. Now, I want to import the passwords from the old profile into the new one on the ...
NTG's user avatar
  • 5
1 vote
0 answers
161 views

Is there an extension to quickly clear / flush / invalidate the Firefox DNS cache (Quantum)

There used to be several DNS flushing add-ons prior to Firefox Quantum. Are any currently available? Is this no longer something that's accessible through the addon API? Yes, I realize that I can do ...
pbarney's user avatar
  • 763
1 vote
0 answers
290 views

Change the font of Reader, Firefox 57

This look like a duplicate of How to change font of Reader View firefox? but none of the answers there work since Firefox Quantum All points to userContent.css but none worked. use @-moz-document ...
Tankman六四's user avatar
2 votes
1 answer
80 views

after upgrade, Firefox 60 does not show checkbox on website

I have upgraded Firefox to Firefox Quantum 60.7.0-esr. The new Firefox version does not show checkbox on a particular website: for comparison, here is a correctly displayed website in Chromium: The ...
Michael Boies's user avatar
1 vote
1 answer
148 views

FIrefox is not rendering correctly webpages and messes with their styling

I have the default theme on Firefox 66.0.2 for Linux Mint. I have noticed that most pages don't show up as they should or as, for example, they show in Chromium. Is this something widespread, and ...
user1031771's user avatar
2 votes
1 answer
138 views

Edit Firefox multi container configuration

I have several containers configured on my Firefox and I have been using for a while, so container have information associated. However, sometimes I was not very focused and I used the wrong one for ...
Daniel Perez's user avatar
0 votes
1 answer
436 views

Firefox has no back button after selecing Google search results

I'm using a friends computer today. When you select any link in the Google search results it opens the link, in the same tab, but the Firefox browser's back button is grey. I checked the history, and ...
user avatar

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