Firefox Community Forum

When viewing a PDF in Firefox the URL bar indicates the file was downloaded to a temporary folder. If I then select "Save" from the PDF toolbar; or if I right click and select "Save page as" it opens a save dialog to the location I previously saved the same category of PDF to. For example I have separate folders for invoices, if the PDF is my electricity invoice it somehow knows and opens the electricity folder. If it is a water invoice, it automatically opens the water folder.

Whilst this is indeed quite handy, I do not understand how Firefox is doing this; nor do I understand whether this may be a privacy risk in some circumstances and should therefore be configurable.

Which dictionary are we using? (Or are we allowing English spelling to be supplanted with American or other spelling?)

Whereas in MS Windows I can choose UK English or one of the many different forms of English in use elsewhere, I'm noting that in Mozilla/Firefox I get the typical warning under a spelling that does not equate with the spelling used in the current dictionary and yet these spellings are not UK English...

Even I choose UK English as my default dictionary the spelling of "colour", "neighbour", aluminium, still give this indicator.

Is there a setting I may change to allow the tab icons / text to fully display down into the blank space that shows on my tab bar? I will attach an image. Thank you.

in the new nova settings ui the selected category is highlighted in light purple. not a fan. how do i change it. don't mind collateral damage as I'm not of fan of this color

Hello everyone.

Firefox updated today. I don't know—maybe some people like the new design of the tabs, the buttons in the drop-down menus, and the gradient borders around the active tab and the tab bar itself. But I’d like to revert to the old interface. How can I do that?

Thanks!

https://apollolaunchcontrol.com/v20test/http___www.apollolaunchcontrol.com_/Crawler_Transporter.html

There's three images on the page, in FF only the top one shows, but if I hit refresh, all three show, but only for half a second, then they wink out. All three show in Chromium just fine.

140.16esr under Debian 12.

Hey

I'm genuinely curious about Firefox BTS in this scenario.

Example: I open website (http://homedevice:1000) and it requires me to log in. Then I log in at (http://192*:1000) and it requires me to login. "homedevice" is a domain name for 192*, yet I still have to log in twice for the same IP under the same port. Why is it treated seperately the homedevice:1000 and the 192.*:1000 address?

Greets

so i used the web app from the firefox nightly adn when installed yt from it , the icon from it was very blurry which appeared on the taskbar , any fix for it , i have also added a comparison image from the brave which is on the left and firefox nightly 159 on the right

I have a list of websites that I keep in the cookies exceptions list so I remained logged in. But I noticed the list is blank in a few recent Firefox versions, even though the sites still retain the cookies. That means I cannot edit the entries or even see them.

Please forgive me if this question was already answered and that I might have accidentally overlooked that answer.

I'm running Firefox 144.0 (64-bit) under Debian 13 (linux).

I want to configure Firefox to never restore any previous session when it starts up, irrespective of how Firefox was last exited.

Even if a running Firefox session was externally killed via some sort of system command or because of a reboot, I never, never, never, never, never, never, never, NEVER (!!!) want it to restart in any previous session.

I ALWAYS (!!!) want Firefox to launch with its default start page, no matter what.

I tried all of the suggestions that I have found on line about how this might be accomplished, but with each one of them, there are cases where the previous session was restored.

I repeat, I do NOT (!!!) EVER (!!!) want the previous session to be restored, under any circumstances.

Is there a way to accomplish this?

Thank you in advance for any suggestions, and again, please accept my apology if this has been answered and I overlooked that answer.

I am using Firefox on Linux Ubuntu 26.04. I normally work with multiple tabs. Then I quit Firefox with all tabs open at the point of quitting. Some times on the rare occasion there can be a forced quit due to some issues. In my settings I have configured it not to open the previous tabs. In fact I want a blank page. But whenever I reopen Firefox, it opens those tabs and tries to reload which is annoying. Some of these pages take a long time to reload, and why would I want to look at tabs which I already have read. Or if it crashes due to some website on a tab why reopen something that crashed in the place ? Can you fix this. Thanks.

My Dell Precision Laptop from 2019 runs a frequently updated Ubuntu 24.04. About one or two weeks ago, after one of the latest Firefox updates, i noticed that video streaming produces rectangular flickering in rapid sweeps. ( Also fast scrolling large text websites produces similar flickering, I think I would have noticed it before...) . If you detected it once, you see it always again... :-( First I fiddled around with the nvidia settings because the driver was also recently updated, without much success. Playing locally stored videos, e.g. with VLC media player, still works fine, so the nvidia driver is not the problem i think. Yesterday I installed Chromium and the video performance is fine! As good as with firefox some weeks ago! So it must be one of the latest updates, that causes the problem. Generally I like firefox more than chromium. I like the control you have, e.g. via Add ons.. So I hope that the firefox performance will increase again... Thank you for firefox! Florian Mengedoht

I'm using Firefox from the official Ubuntu repository (packages.mozilla.org). I have used the (very cool) "translate page" feature successfully, but for some reason it doesn't seem to work on https://wiki.openstreetmap.org/wiki/NL:Basisregistratie_Adressen_en_Gebouwen which I'd like translated to English. Even though Firefox thinks the page was translated, only one of the headings seems to be in English.

I would like to understand how to troubleshoot this and help you improve this great feature. Thank you in advance.

Anyone succeed with running Firefox in headless mode under Ubuntu?

I tried:

firefox --headless --safe-mode -P headless https://quan.hoabinh.vn

but got this error:

[12545] Sandbox: CanCreateUserNamespace() unshare(CLONE_NEWPID): EPERM

• • • You are running in headless mode.

[GFX1-]: RenderCompositorSWGL failed mapping default framebuffer, no dt

I installed Firefox as from "https://packages.mozilla.org/apt" repo.

I am using a local library and it comes to me that I find some activities that occur whilst working on my daily tasks and wonder, I would really like to run a diagnosis in my tasks and activities and check if there are no spams running me dry.