Firefox Support Forum

I used to be able to send tabs between my devices, say when I go from my home computer to my laptop. This option seems to have gone missing, like I don't even see the option when I right click on a tab. What happened to this option? Did I somehow disable it? Can it be restored?

I installed Firefox-ESR on my Raspberry PI and noticed that I cannot play Udemy videos. After some research I found that the Widevine plugin is missing and the OpenH264 Video Codec is also not installed. Following the instructions from similar issues didn't solve the problem. I ticked off and on the "Play DRM-controlled content" button but this only brings the widevine plugin for a moment and after that it disappears. In the network tab I see no activity when click on this button, i.e. Firefox does not send requests.

Additionally the OpenH264 Video Codec is not installed and never installs.

Any ideas how to solve this?

I went into setting and made sure spellcheck is enabled and it is, but there are no other options there. I did exactly what it said on your help article and right clicked in the text box on multiple different web pages and there is NO OPTION. It should not be this complicated.

I can't figure out how to delete this extension: Adobe Acrobat. It's disabled, but I want to delete it.

Hello Mozilla Support Team,

Since one of the last updates firefox Download Setting seems not work properly...

Into Settings > Files and Applications > Downlods > Save files to option is ALWAYS on, even when "Aways ask you where to save files" option box is checked. When I open a PDF in view mode with Firefox, it automatically download it to the location described into "Save Files to"..in my case Desktop. It seems that the "Save Files to" option doesn't gray out when "Always ask..." option box is checked.

Do you have any idea why I can't chose just one of the two options?

Thanks for you help...

Alex

P.S. Attached screenshot...

Hi,

For years I have read directions to get my tabs back where is most logical for me, below the Bookmarks Toolbar. Now with this latest version of Firefox the workarounds I had before are not working.

To cut a long story short: I have made a Chrome folder under the Profile folder I have made CSS sheet with what looks like the commands I need. I have configured Firefox to read the userChrome.css sheet.

I have followed all the directions on this thread https://support.mozilla.org/en-US/questions/1375646 (most of which are repeated elsewhere) and it still doesn't work.

I am beyond frustrated - if anyone happens to know where I can go to request this as blinkin' option I would love to know.

Please could someone help me sort this out in the meantime though?

This is what is in the CSS sheet (which is in the correct place according to the above instructions - checked that already):

Thank you in advance.

/***** START of Sample Rules (delete and replace with your your own rules) *****/
/* TABS: below Navigation Toolbar - fixed for 111/113 */

/* ROOT: VARS */
*|*:root {
  --tab-toolbar-navbar-overlap: 0px !important;

  --tab-min-height: 27px !important;
  --tab-min-width:  80px !important; /*minimum:50px*/
/*  --tab-overflow-pinned-tabs-width: 175px */
}

/* TABS: POSITION */
#TabsToolbar {
  display: block !important;
  position: absolute !important;
  bottom: 0;
  width: 100vw !important;
}

/* Firefox 107 and older *//* #tabbrowser-tabs { width: 100vw !important; } */

/* navigator-toolbox: PADDING */
*|*:root:not([chromehidden*="toolbar"]) #navigator-toolbox {
  position: relative !important; /*89*/
  padding-bottom: calc(var(--tab-min-height) + 1px) !important; /*ADJUST*/
  background-color: var(--toolbar-bgcolor) !important;
}

/* TABS: HEIGHT */
#tabbrowser-tabs,
.tab-stack,
.tab-content {
  height: var(--tab-min-height) !important;
}

/* TABS: APPEARANCE */
#TabsToolbar {
  height: var(--tab-min-height) !important;
  margin-bottom: 1px !important;
  box-shadow: ThreeDShadow 0 -1px inset, -moz-dialog 0 1px !important; /*OPTIONAL*/
  background-color: var(--toolbar-bgcolor) !important;
  color: var(--toolbar-color) !important;
}

/* DRAG SPACE */
.titlebar-spacer[type="pre-tabs"],
.titlebar-spacer[type="post-tabs"] {
  width: 20px !important;
}

/* TABS: movingtab - vertical shifts */
#navigator-toolbox[movingtab] > #titlebar > #TabsToolbar {
  padding-bottom: unset !important;
}

#navigator-toolbox[movingtab] #tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom:  unset !important;
}

#navigator-toolbox[movingtab] > #nav-bar {
  margin-top: unset !important;
}

/* INDICATORS - HIDE */
*|*:root:not([accessibilitymode])             .accessibility-indicator    {display: none !important}
*|*:root:not([privatebrowsingmode=temporary]) .private-browsing-indicator {display: none !important}

/* END - TABS below Navigation Toolbar */

/* Colored bookmark sidebar, toolbar, menu button containers */
  /* Standard folder */
  #bookmarks-view treechildren::-moz-tree-image(title,container),
  #PlacesToolbarItems toolbarbutton[container="true"] .toolbarbutton-icon,
  #PlacesToolbarItems menu[container="true"] .menu-iconic-left,
  #BMB_bookmarksPopup menu[container="true"] .menu-iconic-icon {
    fill: gold !important;
  }

 /* Smart bookmark folder */
 #bookmarks-view treechildren::-moz-tree-image(title, container, query),
 #PlacesToolbarItems toolbarbutton[container="true"][query="true"] .toolbarbutton-icon,
 #PlacesToolbarItems menu[container="true"][query="true"] .menu-iconic-left,
 #BMB_bookmarksPopup menu[container="true"][query="true"] .menu-iconic-icon {
    fill: dimtan !important;
 }
 /* These "containers" are SVG in the sidebar, not yet on the menu */
  #bookmarks-view treechildren::-moz-tree-image(container, queryFolder_menu________) {
    fill: tan !important;
 }
 #bookmarks-view treechildren::-moz-tree-image(container, queryFolder_menu________) {
    fill: tan !important;
 }
 #bookmarks-view treechildren::-moz-tree-image(container, queryFolder_unfiled_____) {
    fill: tan !important;
 }

When I open Firefox settings I can set; Firefox Home (Default), Custom URLs..., or Blank Page. I altered the Firefox Home to show a custom image per [[How to add image to my firefox home page / newtab page|https://support.mozilla.org/en-US/questions/1288490]] . Now I'd like to show the Firefox Home page every time I open Firefox or open a new blank tab.

When I read the article [[How do I set a different Home page and Home button|https://support.mozilla.org/en-US/questions/1341696]] the options in "about:config > browser.startup.page" are limited to "0-blank; 1-home page; 2-last visited page; 3-restore previous session", but there is no Firefox Home page in this option.

So, it seems I cannot have Firefox open to my custom Firefox Home page (and NewTab) image and have the home button open to my corporate web site. Is there another option that I can accomplish this?

What is the "Find in page" toolbar called?

The 113.0.1 update (sic) moved it to the bottom of my page. I want to search for a way to restore it back to the upper part of the page (probably using userChrome).

(Note: I was happy with my setup in 112.0.2)

When I click a mailto link it brings up the GMail app. Instead I want the Yahoo Compose window. Several posts suggest various arcane methods. Either they do not apply or they require hacking. Has the situation improved?

How can I make mailto links go to the Compose window on mail.yahoo.com?

See reddit post— no way I'm typing all that again! Reddit Post It's not that long, trust me— it's just that the code is long... I've attached a slightly different screenshot to the one I posted on the reddit post, but it makes no difference if you see one or the other, or both!

In summary, I've added a css code to my userChrome.css thingy to move the tabs below the search bar. I was also wondering what the best way to transfer my userChrome.css file + about:config settings over to a new version of Firefox. Due to not being admin of my laptop (I'm running it out of the .dmg file— besides, I always like to keep an older version of Firefox as a fallback), I have to install a whole new version of Firefox onto my laptop to update.

Thanks!

Firefox's behavior changed, after v116.0.1 (64-bit) was installed. My "Setting" selection is (and always has been) is the default (display Home Page)

My OS is Win 10 Pro v22H2 (OS Build 19045.3208)

Hi. It's hard to see where to enter text on some sites. How do I make text entry boxes easier to identify please?

For example, I had to look hard to figure out that there's a text entry box on the following page around the words Share an Update...

https://community.morningstar.com/s/profile/0053o00000A9t7k

On my work laptop, I disabled "Recommended by Pocket" to avoid distractions.

On my personal laptop, that setting is already enabled. But I never see any stories recommended by pocket when I open a new tab. What can I do about this?

Hey!

I'm working on a translation management software called Plunet.

There are text boxes within Plunet where the spell checker does work, and others in which the spell checker is not even an option. It doesn't recognize misspelled words by underlining them in red, and when I right-click on words, the only option available is "Link". (See screenshot.) Any ideas?

Thanks!

We are distributor of Firefox extension for dragon professional. ( We are self distrubutor of the extension.)

It’s ID is dgnria_pro.firefox@nuance.com

Now we have done some modification to the same extension, while publishing it shows error as “Duplicate add-on ID found.”

Earlier we have used same ID for the Firefox extension in the year 2018.

Currently we have opened new account with same ID “dgnria_pro.firefox@nuance.com” and faced the mentioned issue.

We are expected to publish our extension with the same extension id as we don’t want our existing customers get affected.

Is there any way with which extension id “dgnria_pro.firefox@nuance.com” can be deleted from backend , so that we can reuse it.

A setting I would like to change in both Firefox Beta and Thunderbird Beta is "grayed out" and has a lock next to it preventing change. What configuration file(s) do I look for to find where they have been locked, so I can unlock them and change the setting? Thank you.

The following HTML feature is the subject of this question.

<input type="time"> https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/time

Firefox is supposed to use a 12- or 24-hour format for input depending on region settings or locale.

I think I should see a 24-hour input format. Firefox only ever presents me with 12-hour input format -- with AM/PM selectors. Chrome, by comparison, presents 24-hour input format, out of the box, as expected. Is this a localisation bug in Firefox, or am I holding it wrong?

I shall try to upload some screenshots, but in case that does not work, here is a text representation of my state.

I am on a Mac. The Mac is configured for en_AU. (I believe 24-hour clocks are used in the en_AU locale.) Just to be sure, the "Time format: 24-Hour Time" checkbox has been enabled in the Mac's Language & Region system preferences. The following command, entered at a shell, produces the desired output format.

% date +%c Sat 26 Aug 22:48:14 2023

All other applications on my computer honour this preference to the best of my knowledge.

I have the en-GB release of Firefox Nightly. Build ID is 20230825041349. Here are the relevant sections from about:support...

Application Settings Requested Locales ["en-GB"] Available Locales ["en-GB","en-US"] App Locales ["en-GB","en-US"] Regional Preferences ["en-AU"] Default Locale "en-GB" Operating System System Locales ["en-AU"] Regional Preferences ["en-AU"]

intl.regional_prefs.use_os_locales has been set to true in about:config.

Why do I still see 12-hour input formats in Firefox?

Thank you.