Diễn đàn hỗ trợ Firefox

My system disk failed, so I had to restore it from pretty old backup, with old Firefox version installed and old profile data. Now I want to start Firefox and reopen all my recent tabs from Firefox Sync, but not from my local (old) profile. How should I proceed?

Hello,

When I select text in Firefox the selection is not highlighted. The selection itself does work (e.g. deleting a selected word) but is not visible. The problem occurs in all fields where text can be entered, so the URL space, the search field but also text field on a page like this one. The strange thing is that the problem also occurs in Thunderbird.

I am using Ubuntu 18.04.6 LTS, Firefox 99.0 and Thunderbird 91.8.1

Per an article on yahoo news, I decided to clear data by going to: Settings->Privacy & Security->Cookies&Site Date->clear data

In hindsight, this turned out to be a mistake. Previously when using yahoo mail, it let me stay logged in for two weeks. Now I have to log in each time. There are also 2 or 3 other sites that logged me in automatically, but now have to log in every time.

How can I undo what I did?

Thank you for any help you can offer,

Carter

'On my firefox browser, the bookmark toolbar disappeared and wans moved from the left margin. How do I get it back to the left margin and auto open on every tab?'

Hi , My main machine is a personal windows laptop. Firefox sync works fine and syncs all things including "all" my installed extensions . recently company issues me a macbook and on it when i install firefox and login my account for sync it syncs other things like bookmarks but does not sync all my extensions only a few of them.

I already tried multiple things like sync delibrately from windows and then pressing sync on mac or reinstalling firefox on mac . but its the same issue.

few of the extensions that are missing :

1. Auto Tab Discard
2. Download Manager (S3)
3. DownthemAll
4. Stylus ( very important for me)
5. Tab Session Manager (THE most important for me)
6. TamperMonkey ( Important)
7. (Temporary Containers)
8. uBlock Origin
9. Xkit Rewritten
10. Zoom Image

I managed to restore the single-spacing for bookmarks, kept a prior version of FF, and fought off nags to update every time I opened FF . . . until now when I was tricked into "allowing this app to make updates to your PC". It wasn't the usual nag button and I thought it was some kind of simple bug fix, but no, I was "upgraded" to v. 100.0.2 and my bookmark spacing fix was overwritten. Furious isn't strong enough to describe my reaction. All this time, and all the other complaints, yet I find no way to decrease the excessive spacing between bookmarks. I understand that this design may be better for those who use a finger on their screens, but what about us mouse-pointer users? Why are we so disrespected? What can I do to decrease the space between bookmarks?

Hi, I've just spent all day trying to follow all the different suggestions here regarding these issues. Adding all sorts of things to the userChrome CSS but 95% of the suggestions have no effect at all [I'm seriously non-technical, so I have no idea if I'm doing it correctly though...probably not] The only thing that I can change is the Tab Height...nothing else changes regardless of what numbers I put in there. The only way I've been able to make the Bookmarks folders usable at all is to enable Compact mode via about:config. But that actually makes it way too compact now...from one extreme to the other. At least it's usable now...so not the end of the world, but the right click menu still has way too much space between every entry [Compact mode made no difference to that at all]. I don't know how to make a screenshot of those menus :) so I took a couple of pics of the screen...can someone please show me what to add to the CSS file to make these ridiculously big spaces between the menu items way smaller...like they used to be before this Proton came in? I tried tons of things that people said to add to the CSS to fix this menu spacing thing but none of them changed anything. I'll include the CSS file that I have below. Thanks a lot

ps: for some reason the pics always come out sideways here

/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/tabs_on_bottom.css made available under Mozilla Public License v. 2.0
See the above repository for updates as well as full license text. */

/* Modify to change window drag space width */
/*
Use tabs_on_bottom_menubar_on_top_patch.css if you
have menubar permanently enabled and want it on top
*/

/* IMPORTANT */
/*
Get window_control_placeholder_support.css
Window controls will be all wrong without it.
Additionally on Linux, you may need to get:
linux_gtk_window_control_patch.css
*/

:root{ --uc-titlebar-padding: 0px; }
@media (-moz-os-version: windows-win10){
:root[sizemode="maximized"][tabsintitlebar]{ --uc-titlebar-padding: 8px }
}
#toolbar-menubar[autohide="true"] > .titlebar-buttonbox-container,
#TabsToolbar > .titlebar-buttonbox-container{
position: fixed;
display: block;
top: var(--uc-titlebar-padding,0px);
right:0;
height: 36px;
}
/* Mac specific. You should set that font-smoothing pref to true if you are on any platform where window controls are on left */
@supports -moz-bool-pref("layout.css.osx-font-smoothing.enabled"){
:root{ --uc-titlebar-padding: 0px !important }
.titlebar-buttonbox-container{ left:0; right: unset !important; }
}

:root[uidensity="compact"] #TabsToolbar > .titlebar-buttonbox-container{ height: 24px }

#toolbar-menubar[inactive] > .titlebar-buttonbox-container{ opacity: 0 }

#navigator-toolbox{ padding-top: var(--uc-titlebar-padding,0px) !important; }

.titlebar-buttonbox-container > .titlebar-buttonbox{ height: 60%; }

#titlebar{
-moz-box-ordinal-group: 2;
-moz-appearance: none !important;
--tabs-navbar-shadow-size: 0px;
}

.titlebar-placeholder,
#TabsToolbar .titlebar-spacer{ display: none; }
/* Also hide the toolbox bottom border which isn't at bottom with this setup */
#navigator-toolbox::after{ display: none !important; }

@media (-moz-gtk-csd-close-button){ .titlebar-button{ -moz-box-orient: vertical } }

/* These exist only for compatibility with autohide-tabstoolbar.css */
toolbox#navigator-toolbox > toolbar#nav-bar.browser-toolbar{ animation: none; }
#navigator-toolbox:hover #TabsToolbar{ animation: slidein ease-out 48ms 1 }

/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/tabs_on_bottom_menubar_on_top_patch.css made available under Mozilla Public License v. 2.0
See the above repository for updates as well as full license text. */

/* Menubar on top patch - use with tabs_on_bottom.css */
/* Only really useful if menubar is ALWAYS visible */

:root{ --uc-window-control-width: 0px !important }

#navigator-toolbox{ padding-top: calc(24px + var(--uc-titlebar-padding,0px)) !important }

#toolbar-menubar{
position: fixed;
display: flex;
top: var(--uc-titlebar-padding,0px);
height: 24px;
width: 100%;
overflow: hidden;
}

#toolbar-menubar > .titlebar-buttonbox-container{ height: 24px; order: 100; }

#toolbar-menubar > [flex]{ flex-grow: 100; }
#toolbar-menubar > spacer[flex]{
order: 99;
flex-grow: 1;
min-width: var(--uc-window-drag-space-width,20px);
}

#toolbar-menubar .titlebar-button{ padding: 2px 17px !important; }

#toolbar-menubar .toolbarbutton-1 { --toolbarbutton-inner-padding: 3px }

/* TABS: height */*|*:root { --tab-toolbar-navbar-overlap: 0px !important; --tab-min-height: 24px !important;
--tab-min-width: 80px !important;

#tabbrowser-tabs {
width: 100vw !important;
}
#main-window:not([chromehidden*="toolbar"]) #navigator-toolbox {padding-bottom: var(--tab-min-height) !important;}

.tab-background {
border-radius: 8px 8px 0px 0px !important; border-image: none !important;
}
.tab-line {
display: none;
}

.tab-close-button {
color: red!important;
}

#nav-bar{ height:20px; }

/*** Tighten up drop-down/context/popup menu spacing ***/

menupopup > menuitem, menupopup > menu {
  padding-block: 4px !important;
}
:root {
  --arrowpanel-menuitem-padding: 4px 8px !important;
}

I was quite unhappy with the new Firefox Proton design, so I made a CSS file and copied the following code from a website. However, I don't know what to do to (1) slightly reduce the tab height, (2) get back tab borders for inactive tabs and (3) remove the small gaps between tabs. How exactly do I have to change the following code to do so (ideally, for convenience, please just complete the code accordingly)? Thanks in advance for any support!

/*** Tighten up drop-down/context/popup menu spacing (8 Sep 2021) ***/

menupopup:not(.in-menulist) > menuitem, 
menupopup:not(.in-menulist) > menu {
  padding-block: 2px !important; /* reduce to 3px, 2px, 1px or 0px as needed */ 
  min-height: unset !important; /* v92.0 - for padding below 4px */
}
:root {
  --arrowpanel-menuitem-padding: 4px 8px !important;
}

/*** Proton Tabs Tweaks ***/

/* Adjust tab corner shape, optionally remove space below tabs */

#tabbrowser-tabs {
    --user-tab-rounding: 6px;
}

.tab-background {
    border-radius: var(--user-tab-rounding) var(--user-tab-rounding) 0px 0px !important;
    margin-block: 1px 0 !important;
}
#scrollbutton-up, #scrollbutton-down { /* 6/10/2021 */
    border-top-width: 1px !important;
    border-bottom-width: 0 !important;
}
/* Container color bar visibility */
.tabbrowser-tab[usercontextid] > .tab-stack > .tab-background > .tab-context-line {
    margin: 0px max(calc(var(--user-tab-rounding) - 3px), 0px) !important;
}

I'm not sure what happened in the latest update, but it broke the Canvas website that I use regularly for classes and homework. I've checked and confirmed that Canvas still works normally on Microsoft edge.

Extensions shouldn't affect the website because Canvas was working normally until the recent Firefox update.

Anyone know how to solve this problem?

I am getting Access Denied on many web sites that i have used frequently. For example, for the site https://www.apartments.com/ I get this message:

Access Denied You don't have permission to access "http://www.apartments.com/" on this server.

Reference #18.ca68dc17.1653685076.c42d150

I am using Firefox Browser 100.0.2

Help!

Hi I'm using Firefox to open PDF files from a network directory. The reason is that it's probably the best PDF manager I can find.

• What I wanted to do was have an option to open the file in a native viewer such as Adobe, this way look at 2 parts of the document at the same time.

At the same time keep it in Firefox.

Is there a setting to do this or an add-on. The add-ons I've seen are meant to open directly to Adobe from a web link I think.

Posting on behalf of a user who hit the VPN inbound queue with a question better suited for this forum:

The tab bar, toolbar, and address bar placement in my Firefox Desktop browser has recently changed. I have been trying to revert these recent changes as they interrupt my current workflows.

I DO know which prior profile save contains the desired info however, it contains many files and I DO NOT KNOW which files I need for the bars to be restored. If you could provide me the name(s) of the file(s) that holds the bars data, I am probably saved, hopefully saved.

I know this has been asked before but I've looked through past instances and couldn't find a solution that still seems to work as of 2022. I need a way to disable certain built-in Firefox keyboard shortcuts. I recently switched from Chrome to Firefox but if I can't disable the ctrl+i and ctrl+b keyboard shortcuts I'm going to have to switch back. I use both very frequently for work, so their non-functionality in this browser is genuinely impacting my productivity and it's getting really frustrating.

I have a website that has MP4 video in a HTML5 video player, with subtitles done in the WebVTT format (*.vtt). I just noticed that, when testing my pages locally on my C drive, the subtitles no longer appear on the movies. They do appear on the website (thankfully). Does this mean that lately Firefox has dropped support for local VTT files? Chrome has always ignored local VTTs, for some reason, which is why - until now - I used Firefox to test subtitles off the C drive. Note: If I link the local page to the VTT file on my website, subtitles still do not appear in Firefox. It could be something else, of course, so just need to know if VTTs are now unloadable locally in FF.

Hello. On some of my sites that i try to get onto with Firefox its says performing TLS handshake then it goes to Secure Connection Failed and says PR_End_Of_File_Error. I am totally updated with Firefox, plus i cleared out everything in my history. That did not help. When i tried to get onto these websites with Chrome web browser i do not have this problem at all. Why is this? I have BitDefender Total Security newest version for home. My firewall is through them along with virus protections. So can you help me out with this ongoing problem getting on some websites?

Thanks Firefox [email removed from public]