Firefox Support Forum

In my Firefox settings, I have PDF files set to "Open in Firefox".

When I click on a PDF file, Firefox DOES open the PDF in a new browser tab, but the PDF ALSO downloads to my desktop (both!). How can I stop it from downloading?

I work on kubuntu 20.04 with plasma 5.18.8 desktop environment. I have a QtCurve-based custom application style, which I almost match with css for GTK apps. Firefox has to be an exception by itself! Not only that, but it changes my ability to customize its interface, from time to time and even changes access to such ability, on some updates.

My scrollbar customizations in userChrome.css and userContent.css do not work any more (other CSS changes still work, for menu/addressbar/tabbar/bookmarksbar orderint and tab styling). I had to resort to settings in user.js file, to get a 20px width scrollbar, suitable for my big screen, but... it gets very wide when I increase the focus, on some webpages and becomes very ugly! Furthermore, I cannot make sense of the proper use of "ui.themedScrollbar*" settings and the scrollbar and its slider result in the same color. These are my settings in user.js:

user_pref("widget.content.gtk-theme-override", "backwater"); user_pref("widget.non-native-theme.enabled", false); // Use GTK-3.0 gtk.css: set to false user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true); // Use userChrome.css & userContent.css: set to true user_pref("widget.gtk.alt-theme.scrollbar_active", true); user_pref("widget.non-native-theme.scrollbar.size.override", 20); // If nothing else works, fix scrollbar width to 20px user_pref("widget.non-native-theme.gtk.scrollbar.round-thumb", false); user_pref("widget.non-native-theme.gtk.scrollbar.thumb-size", 1.0); // originally 0.75 user_pref("widget.non-native-theme.gtk.scrollbar.allow-buttons", true); // it was true, anyway... user_pref("layout.css.cached-scrollbar-styles.enabled", false); user_pref("layout.css.color-mix.enabled", true); user_pref("widget.non-native-theme.scrollbar.style", 4); // wide scrollbar theme: set to 4 user_pref("ui.themedScrollbar", "#bad1f5"); user_pref("ui.themedScrollbarInactive", "#668cc4"); user_pref("ui.themedScrollbarThumb", "#e4e4e4"); user_pref("ui.themedScrollbarThumbHover", "#e4e4e4"); user_pref("ui.themedScrollbarThumbActive", "#668cc4"); user_pref("ui.themedScrollbarThumbInactive", "#bad1f5"); user_pref("browser.dom.window.dump.enabled", false); user_pref("extensions.ui.sitepermission.hidden", false); user_pref("fission.experiment.max-origins.qualified", true);

Either with the "ui.themedScrollbar*" settings or without them (and cleared from the prefs.js file), the scrollbar and its slider result in the same color, unless I (tryingly) click on some place on the scrollbar outside its slider; then I can see the slider, _only_ for the duration of the mouse-down event (which causes up or down page-hight scrolling).

The default, very thin scrollbar, as well as my modified wide scrollbar with invisible slider are both useless to me! I have even tried fx-autoconfig (https://github.com/MrOtherGuy/fx-autoconfig) to make the scrollbar CSS work, but no result. At this point, I am considering switching to another browser, despite the trust I have to mozilla, for my data and privacy.

My muscle memory has me constantly clicking just slightly to the right of where the furthest right tab is. It feels weird stretching alllll the way right or alll the way left. I've tried both spots and it just feels unatural to me. Obvioulsy I'll get used to it after a while its just I'd like it to be back to where I'm used to it being.

I have Firefox 103.0.2 and have enabled the use of style sheets in about:config. I have a CSS style sheet userChrome.css that is giving me color at the top heading and in the tabs, except for the active tab (is white)

I'll list the CSS and see if you can give me some guidance in what i need to do to put some roundness in the top corners of the tabs. the UserChrome.css file .titlebar-color{ color: AccentColorText; background-color: AccentColor; } .tab-background{ border-radius: 5px 5px !important; margin-bottom: 0px !important; } .tabbrowser-tab:not([selected=true]):not([multiselected=true]) .tab-background{ background-color: color-mix(in srgb, currentColor 5%, transparent); } menupopup > menu, menupopup > menuitem{ padding-block: 2px !important; min-height: 0px !important; }

root{

--arrowpanel-menuitem-padding: 2px !important; }

The whole top is solid color (same as Windows color, which is ok by me. However, it would also be nice if there were a dividing line or separation between the menu on top and the "tabs" below. Any ideas would be great! Thanks!! Vern

Hi,

Often the ctrl + m (mute tab) shortcut gets in my way while using the browser as i use this shortcut in something else. I would like to know if it is possible to disable that.

Thanks. (Message written using Google Translate)

I'm using Firefox 112 on Windows 10. The toolbar contains icons for several extensions that I don't want to see. I click on the >> menu and then Customize Toolbar. That opens the Overflow Menu. It says, "Drag and drop items here to keep them within reach but out of your toolbar." I try to drag one of those extension icons onto the Overflow Menu. It won't go. The dragged icon picks up a circle with a line through it, indicating that this is not allowed or not working.

How can I use the Overflow Menu as advertised, to remove unwanted extension icons from the toolbar? Or is there a good workaround?

Before update when I clicked in PDF viewer toolbar download button it opened a screen to open with, right now it only download a file. I want it back. I have firefox as pdf viewer, but sometimes I need to open file with Acrobat DC, that's when I did click download button. It works on other computer like before, it is before firefox update.

Hi! I recently made the switch from Chrome to Firefox and Im liking it aside from this one thing. When Im watching a video in full screen, moving the cursor to the top doesnt pop up Macs top bar (File, Edit, ..... battery, time).

This sounds like a banality but I mainly watch videos while getting ready, working etc, and I really need to see the time! Im used to always keeping the cursor at the top to see it. I searched around in settings and forums but didnt find any fix. The only solution seems to be to not use full screen which I think we can all agree just sucks in a major way.

Im using MacOS Monterey 12.3.1 and Firefox 102.0.1. Is there a way to fix this or nah? Any info much appreciated!

When I search "translate" into the address bar the first option is www.translate.com instead of just searching it on google (which is what I normally do). This happened after I searched the term and a little pop-up asked if I meant to go to the website instead. I accidentally clicked yes and do not know how to change it back. I would like to be able to type "translate" and have the google results show up first. Any help is greatly appreciated.

Hello, in past versions of Firefox, I was able to follow the steps on this page to set a custom HTML file on my PC as my home page for new tabs: https://peterries.net/blog/firefox-ubuntu-local-file/

I have Firefox 107.0.1 now and it's not happening. When I open the browser from scratch, I see my custom home page file. But when I open a new tab, I just see a blank screen. If I then click the Home icon on the toolbar, I do see my custom HTML page, but I don't want to have to click that button for each new tab.

Right now, in my settings, I have the URL to the page set as the custom URL for the HTML fiile, like this:

file:///home/peter/Documents/homepage/peter-home-homepage.html

That works. And I also have followed the steps on that blog post to customize my /usr/lib/firefox/autoconfig.cfg and my ../firefox/defalults/pref/autoconfig.js files. That's no longer working.

Did something in a recent version change? Is this no longer supported? Thanks for any ideas!

OS - Ubuntu22 Firefox - Default firefox on ubuntu22 (Mozilla Firefox 103.0.1)

Use case - 1. Custom profile folder (named prof1) contains pref.js and chrome folder with custom css file. 2. prof1 is created in -> "/customData/profiles/prof1" 3. The folder "/customData" has full rwx permissions and is owned by $USER (not by root)

Output -> 1. When launching firefox mentioning the profile -> "$ firefox --profile /customData/profiles/prof1"

The browser does not load, but there is an error box saying Profile Missing Your Firefox profile cannot be loaded. It may be missing or inaccessible.

Questions -> 1. Is it possible to load firefox profile from root directory ? 2. If custom profile folder is created in "/home", then it is launching and working perfectly. How is this possible when the permissions and owner is same as the one in "/customData"

With the upgrade to Firefox 106 on Mac, Private browsing windows open with a dark theme by default. How do I enable the light theme for Private browsing windows?

I use Private browsing at work for website testing, and the dark themed tabs / UI are much harder to read and use than with a light theme.

How to allow web page to override a keyboard shortcut. Currently firefox picks up the shortcut instead of the webpage...

For example I have an webpage that detects ctrl-shift-h which worked fine in version 56 but now in version 96 it brings up a "Show All History" dialog

I an doing many such things so I looking for a generic way to override firefox keyboard shortcuts

Hi,

I'm on an a pretty old Linux Xubuntu pc, but with the latest FireFox. In a profile I regularity use I unchecked the Title Bar checkbox in the Customize Toolbar screen, but then FF crashed and I can't get that profile opened again. I can still open other profiles (because I still use the old-fashioned profile manager and don't need to go into about:profiles), but when I open that particular profile, after some hangups, I only get FF in the taskbar, but no screen opens so I can't change the setting back again.

Is there a file in the profile folder I can edit or something like that to enable the Title Bar option again to see if that profile wants to open normally again?

In case that's not possible I can copy that particular profile into a new profile, but then I will undoubtedly also copy the title bar setting, which I don't want. So can I copy the profile except for the one file with that setting and use the file from the new profile instead? What file would that than be?

I hope someone can help me out. Thanks in advance for any help.

The Firefox desktop browser default font is replacing all fonts on some websites, only title fonts on some others, and then leaving others unchanged. It seems random, and I can't stop the default font from taking over randomly on most websites no matter what I do. This was not happening until today, and no browsers or general MacBook Air preferences were changed between today and yesterday when I last used the browser on desktop.

Under Firefox Preferences » Fonts » Advanced, I've made sure to check the box to "Allow pages to choose their own fonts instead of your selections above", and I've unchecked it, and I've re-checked it, and the default is still overriding fonts on most websites.

I've quit and restarted Firefox 3 times.

Help!