Forum der Gemeinschaft Firefox

Environment:

Firefox on Windows Web app prints PDF by creating an iframe with a blob URL, then calling iframe.contentWindow.print() Library behavior is similar to print-js (PDF iframe print flow) Problem:

When Firefox PDF handling is set to “Open in Firefox”, printing mostly works. When Firefox PDF handling is set to “Save File”, the same blob iframe print flow often fails: print preview shows blank page / about:blank or preview shows an extra trailing blank page print dialog options also differ from normal PDF preview flow What I already confirmed:

iframe src (blob URL) looks valid and similar in both settings issue is reproducible with same PDF data fallback to image-based printing works but degrades UX (different print panel/options, possible scaling differences)

I have personal files on rapidgator.net & premium account. if i try to download one of this files on firefox my speed is only 2-4Mb/s if i try to download with JDownloader the speed is 45-55Mb/s (one single file) This has been happening since October 2025...

I just switched to firefox from edge, and so far I really like it, but I got an issue with scrolling through youtube home page, it's laggy, and the lag is present 95% of the time. This is not happening in Edge or Chrome. This might be subtle to people using 60hz screens but for me it's noticeable and annoying, its as if the FPS drops from my set 144 to 30 or something. Is there a way to fix this? I really want to keep using Firefox :(

ich benötige die übermittlung, da das chronic dieses eingestellt hatte: die auffindung der www´s durch das vorgehen bei dem umstellen der mozilla-umsetzung bei der neuinstallation. durch dieses hatte ich die www von einer bestimmten auffindung nicht (ich kann die www gern durchgeben: frau, bdsm, in der nähe, aber ohne kommerziellem hintergrund !).

I received a pop-up scan code to get Firefox on my phone, but when i scan or take

photo of it it brings me to an on-line survey panel that I am a member of.Is that legit or something to avoid?

Hello,

I am wondering where I can find all of my saved tab groups. The chevron icon in the top right only shows the 5 groups I most recently saved, and there is no way to expand it to see all of the groups I currently have saved.

Thank you in advance for your help!

im loged in to firefox and i want to change from 1 of my profiles to another one of my 3 profile but it wont let me choose on of the other profile it show them to me but cant pick one ?i have work to do and i cant get anythiing done because of this ?

Dear Mozilla Firefox Support Team,

I have been a loyal Firefox user for many years because I have always appreciated its speed, privacy, and reliability. However, I have noticed that Firefox has become slower over time, and I am disappointed with its current performance.

The browser feels increasingly sluggish during everyday use. One of the biggest issues I experience is with YouTube, where videos often do not play as smoothly as they should. I also notice that Firefox consumes a significant amount of RAM, even when only a few tabs are open, which affects the overall performance of my computer.

I sincerely hope the Firefox team will prioritize performance optimization in upcoming updates. Many users, including me, want a browser that is fast, lightweight, responsive, and efficient with system resources. Speed and smooth performance are some of the main reasons people choose a browser, and I would love to see Firefox become the quickest browser again.

Please continue improving memory management, reduce unnecessary resource usage, and optimize YouTube and other modern websites for a smoother browsing experience.

Thank you for your hard work and for listening to user feedback. I hope future releases will focus on making Firefox faster, lighter, and more responsive.

I was watching some German video (not on YouTube) and needed the subtitles translated into English. The translation itself was great, but as the video went the subtitles were switching from original language to translated, making it almost impossible to read them. The subs are fine when I press 'pause', but pressing it all the time in the moment of a long dialogue for example is inconvinient. I wonder if there's a way I can fix it myself in the browser's settings, or if it's a bug that will be fixed in future updates

I am signed in to Mozilla account but the VPN plug in never gives me the option to turn it ON. I see the VPN plug in in the tool bar, every time I click on it, it tells me to sign in to my account even though I am already signed in. It never presents the option to turn "on" like I see in the FAQ. The "Turn on VPN" option never appears.

Some files that are visible in my PC's directory are not visible to Firefox to upload to attach to a Google g-mail, even though they are visible and uploadable to g-mail in Chrome. I created 4 similar (all pdf) files (printed from Adobe), but only 2 are visible to Firefox!!??

This has happened before. I try re-creating the invisible files, but have no success.

Unless I can fix this issue, I'll have to stop using Firefox.

On my new dell laptop, Firefox seems to run well. however, when I select one of my regular bookmarks from the dropdown, it ignores the choice and chooses a link (e.g. a news story) from the page I'm currently on, one directly under the bookmark I've chosen. If I choose the bookmark link again it operates correctly.