Super User
Super User

Questions tagged [firefox-57]

Firefox 57 is a major update of Mozilla Firefox, released in 2017, known for a new parsing engine and extensions system. It is also styled "Firefox Quantum" in marketing materials.

16 questions
92
votes
6 answers

How to hide tab bar (tabstrip) in Firefox 57+ Quantum

How to hide/disable/remove the tab bar in Firefox 57+ ("Quantum")? The goal is to just hide the tab bar totally. Useful if paired with extensions like "Tree Style Tab". Note: there is a similarly looking question here: Firefox hide everything except…
VasyaNovikov
  • 3,656
33
votes
7 answers

Change Firefox new tab background

I always use dark personas theme or the default compact dark theme that comes included with Firefox and I don't like the default background color being white when I open a new tab. There was an add on I used that let me customize new tabs but it's…
danicotra
  • 2,036
13
votes
5 answers

How can I downgrade Firefox?

I let Firefox auto update and I don't like some new feature, the new GUI, or it broke something. How do I roll back or downgrade? NOTE: Potential duplicate questions (1, 2) did not come up in a search of SuperUser, but they did as suggested…
YetAnotherRandomUser
  • 2,031
12
votes
8 answers

All tabs groups lost after updating to Firefox 57.0 Quantum

All tabs groups lost after updating to Firefox 57.0 Quantum I need to get back not only the open tabs (within the "active" group of tabs) but the rest of them (the ones that were open in "inactive" groups of tabs), which were more than 60 tabs Is…
jakijem
  • 123
  • 1
  • 5
11
votes
1 answer

Firefox Quantum - I want to access restricted port but `network.security.ports.banned.override` does not work?

Firefox Quantum - I want to access restricted port but network.security.ports.banned.override does not seem to work. How can I connect to http://localhost:4045 ?
ruseel
  • 211
9
votes
3 answers

Disable elements of the firefox 57 UI for TreeStyleTab

I recently upgraded from firefox 55 to firefox 58 nightly and many extensions have to be updated. Treestyletabs is the only extension that I really use and it has been reimplemented as a sidebar panel. The difference is that it now has a giant bar…
abrahimladha
  • 193
8
votes
4 answers

Firefox 57 / block Javascript per site

As you all might know, Mozilla is migrating its addon system to WebExtension and so many addons break from version 57+, see more here: https://blog.mozilla.org/addons/2016/11/23/add-ons-in-2017/ In the past I used "Yes Script" and "No Script" to…
log69
  • 163
7
votes
1 answer

Need a do-it-yourself replacement for tab groups in Firefox 57

The recent update to Firefox 57 marked my favourite Tab Groups extension obsolete; the Firefox Multi-Account Containers extension it offers is nowhere near adequate - this apparent beta can't even move tabs between groups. (On the positive side, the…
sigil
  • 195
6
votes
1 answer

Is Firefox 57 multithreaded?

According to Multiprocess Firefox on MDN, Firefox 57 finally runs things in different processes. So is Firefox 57 multithreaded? In particular, how many cores does it use at most? Say I open 20 tabs at once on a quad-core machine, will Firefox 57…
Nemo
  • 1,151
6
votes
1 answer

Firefox 57 cannot display Arial on Linux

After upgrading Firefox to version 57 on my Ubuntu (16.04 LTS) Linux system, the browser will no longer display the Arial font. It simply discards all characters except international ones (such as ø). Other fonts work fine, and Firefox did not have…
oz1cz
  • 177
5
votes
1 answer

One website inaccessible on only one computer

My wife's Win 7 computer is suddenly unable to connect with one web site (no problem with any other site). Web site: https://fepblue.org downforeveryoneorjustme.com shows no problem with the site. I can access the site without even a lag on two…
fixer1234
  • 28,064
4
votes
4 answers

Firefox Quantum (>=57) How to toggle all toolbars? (with a keyboard shortcut, like F11 but in a window, not fullscreen)

F11/Fullscreen is sometimes impractical*. I just want to toggle the toolbars. In older Firefox versions this was possible with the addon "Dorando keyconfig": 1. specify a script: var s = document.getElementById('status-bar'); s.hidden =…
MacMartin
  • 1,183
3
votes
4 answers

How to get back the vanilla bookmarks folder color in Firefox 57?

I am not a fan of the bookmarks folder colors in Firefox 57 default theme: In prior version the folders were colored in vanilla color: Is there anyway to get that color back in Firefox 57?
AngryHacker
  • 19,327
3
votes
1 answer

How can I increase tooltip size in Firefox 57?

I'm currently on Firefox 56 and have seen the warning that many add-ons are going to break in 57, which is coming soon. I'm using one of the deprecated add-ons to increase the text size in tooltips, and am looking for another way to solve that…
Monica Cellio
  • 275
  • 4
  • 18
2
votes
1 answer

How to change the default local storage settings in Firefox?

In Firefox 57, when I open a website, and check its permissions I can see a long list: I want to change these two default settings: Maintain offline storage Store Data in Persistant Storage (not sure how the two are different, but I don't like…
user32421
  • 121
1
2