Firefox Community Forum

Hi, I recently switched to Firefox and I have run into a problem. While printing a pdf on the "more setting" menu the percentage scale doesn't actually work. First of all the preview doesn't change when trying different scales, I thought that it might have been a preview problem and I've tried to print anyway finding out that also the printed result wasn't correct. I often use this feature and I will be grateful if you are able to help me. Thanks

Hi Firefox team, I recently switched from Chrome to Firefox due to a recurring issue I noticed on my HP Omnibook laptop (productivity-focused, iGPU,). While watching YouTube videos in Chrome or Edge, I occasionally see a brief (0.1 second) black-and-white glitch near the top of the screen — but only when the video quality changes (e.g., auto-switching or manual resolution change). It never happens during regular browsing or local video playback. I’m testing Firefox now and wondering: - Does Firefox handle video stream transitions differently than Chromium-based browsers? - Is hardware acceleration in Firefox less prone to triggering such micro-glitches? - Any recommended settings or flags to optimize video playback stability in Firefox? - I was hoping to see an option to turn of AV1 video codec (if possible) I’m not gaming or doing heavy rendering — just casual productivity and media use. And I have switched on the default performance settings from my firefox browser setting. Would love to know if Firefox is better suited for this kind of smooth, glitch-free experience. Thanks in advance!

I've been using the "Show shortcut when selecting text" feature in Firefox, where clicking the AI ​​icon after selecting text gives me quick options like "Quiz me," "Explain this," etc.

But I've run into a issue: after a certain FireFox update, when I select text and pick one of those options, Firefox does open the Copilot AI sidebar (which I've set as my default), but it doesn't actually do anything after that—it just shows the Copilot new task screen without sending the selected text or performing the action.

（I don't know why Firefox recognized my system as Windows 10, but in fact my system is Windows 11.） Firefox version: 144.0 (64-bit)

System Information Equipment specifications Device Name | DESKTOP-2S4H3VK Processor | Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz (2.59 GHz) Onboard RAM | 4.00 GB System Type | 64-bit operating system, x64-based processor Pen and Touch | No pen or touch input available for this display Windows specifications Version | Windows 11 Pro Version Number | 24H2 Installation Date | 2025/9/28 OS version | 26100.6584 Experience Windows Feature Experience Pack | 1000.26100.234.0

I usually want spellchecks "English (United kingdom, large)" and "German (Germany)" active. Every few days to weeks it changes to a (single) random other language instead, like "German (Luxembourg)". Posts I've found elsewhere suggest changing display language (which should be unrelated and is already set to UK English), uninstalling all other dictionaries system-wide (which should not be necessary and is not acceptable), reinstalling Firefox entirely (but that's for cases where the correct dictionary was never selectable, I can select it, it just doesn't stay for long) or issues with syncing with other devices (but I don't change that setting on other devices, either). How do I stop spellcheck from changing and why does this even happen?

I started to have this problem within the last few days. Selecting "Open image in new tab" opens a new tab but displays a very small, pixel sized white rectangle and no image is displayed.

The attached is a screenshot of the page at

https://www.mozilla.org/media/cms/images/monitor-landing-flat.width-1200.png

I dont have this issue in Chrome or DuckDuckGo browsers. I have deleted cached images, files, disabled all extensions and restarted my phone to no avail. I haven't found any relevant settings to check in my phone settings or in FFx but am I missing something? JW

Firefox V144.0.1 for Android 16 on Galaxy S24

Ok - My Englisch is not the yellow of the egg, But - Ich habe Probleme beim Aufräumen der Lesezeichen. (I have problems with organisation of the Bookmaks) Meine SideBar zeigt 2x den Bereich "Lesezeichen-Menü" - keine Ahnung warum. (My SideBar shows 2x the Area "Lesezeichen-Menü" - I don't know why.) Ich möche meine Lesezeichen in Ordnern organisieren (I try to organize my Bookmarks in "Folders" by theme) Aber - wenn ich die Einträge verschiebe, sind sie doppelt vorhanden. (But - if I move the entries, they appear double) Wenn ich einen der doppelten Einträge lösche, sind beide weg! (If I delete one of the double entries, they disappear both!)

Kann sein, dass ich nicht verstehe, wie das organisiert ist ... (Maybe, I don't understand the organization of the entries)

Bitte helfen Sie mir zu verstehen, wie ich das zu verstehen habe (Please help me to understand, how I should understand organization of the Bookmarks)

Ich bin kein Programmieren, habe keine Ahnung, wie ich Firefox einstellen muss ... (CSS???/JS???) (I am not a programmer, I have no idea, how to adjust Firefox 144.0 (64-Bit) - by CSS/JS)

Ich bin nur User - und mag den Chrome / Edge / Internet-Explorer nicht. (I'm only User - and I don't like Chrome / Edge / Internet-Explorer).

Bitte helfen Sie mir ... (Please help ...)

With best sunny wishes Ruth

when going to my website I get this error message:

Secure Connection Failed

An error occurred during a connection to analytiwave.com. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.
but only on this website?  Its only on this website and have been told several reasons for it which none have worked...Any ideas?

I am getting sick and tired of ytube video 153 error messages on the latest releases of Firefox when trying to access a ytube video. I use Firefox on Linux (Ubuntu and Mint) with multiple profiles and it didn't used to be this way!!

Even clearing the profile cache and history has unpredictable effect. The web is full of questions to this very issue with no definitive fix. It appears Firefox is not clearing things out properly even though the profile settings are set to delete everything upon exit.

What is the fix?? (or is there one?) A very frustrated longtime user.

HOW to add another windows11 device to this Firefox account,... when that other existing Firefox account was "disconnected" after my recent upgrade from Windows10 to Win11. Not successful even at logging in with existing p/w,... and the security key does not work either.Need to start over with new account on that other windows11 device, but using the same email address: inetsurf@sonic.net. Can you help me?

As of the last couple of days I'm getting a pop-up requiring me to log in to my VPN followed by an Authenticator code. I've never had to create the latter in the past. And currently I can't proceed to log into VPN. If I follow the option link as if I'm a new user (I'm not), it accepts my UserId and password but then reportedly is to send me, via email, a six digit code to verify I'm who I say I am. The code never arrives in either my inbox nor junk mailbox. So I'm currently cannot access my Mozilla VPN application. Please advise re: a resolution. It was working fine until a couple of days ago.

hi, does anyone know where could i find installed extension to work, because where ever i find FE(search by image) it's look like extension setting environment. or any info abt how can i add option to contextual menu sub menu....! thank you in advanced 🙏🙏🙏🙏

I have years of bookmarks that have disappeared and my history is missing. Firefox opens with the tabs that were open when it shut down. I really want my bookmarks back.

Hello,

I have a question regarding automatic updates for Firefox.

I sometimes use a Linux live system (with pre-installed Firefox 140), and Firefox updates flawlessly through the „Help --> About Firefox“-setting.

Is the connection with the Mozilla-server encrypted (https:) during this update?

Are the updated files also checked for integrity?

thank you in advance

Newbie72

A very odd behaviour! If I pull up the BBC website in FF and move to any news item or article, then my vertical scrollbar is disabled. I can re-enable it by reloading the page and the problem does not recur for the rest of the session. (Just very occasionally it happens after the second navigation rather than the first). Trivial I know, but an irritation (as well as a malfunction!)

I also have the taskbar fails to display in FF, curable by a double-tap on the Win Key. Is this going to be sorted on an update? Also trivial/irritation! TIA