Firefox 커뮤니티 포럼

Animated icons worked in the previous versions and I like them. It was also a way in which Firefox differentiated itself from the Gobble/Microslop browsers.

Is there a way for me to enable animated icon viewing in the latest browser versions so I can continue to view them? I really hate that animated web page icons now appear as static icons. Hate, hate, hate.

I checked and borh of my Lenovo Chromebooks are running the 2026 version. Neither one will allow me to import bookkmarks . Is there a version I need other than the provided by Google?

After the latest update, a website I use (https://compcon.app/) started throwing the following errors:

downloadable font: CFF : Failed validating CharStrings INDEX (font-family: "Helvetica Bold" style:normal weight:700 stretch:100 src index:0) source: https://compcon.app/assets/Helvetica-Bold-DaBjwqT2.otf downloadable font: CFF : Failed to parse table (font-family: "Helvetica Bold" style:normal weight:700 stretch:100 src index:0) source: https://compcon.app/assets/Helvetica-Bold-DaBjwqT2.otf downloadable font: rejected by sanitizer (font-family: "Helvetica Bold" style:normal weight:700 stretch:100 src index:0) source: https://compcon.app/assets/Helvetica-Bold-DaBjwqT2.otf

It can't load the font the website is asking it to use and is replacing it with a default one instead.

Do you know how to fix this? Either on my end or theirs?

Apologies for the long post but this is important and a bit complicated.

There are a couple issues here. I assume that this applies to uploads as well but I haven't really investigated that. To be fair, probably all browsers suffer from similar problems, but the fix has to start somewhere, and Firefox seems ideal due to its prioritization of UX over advertising etc.

First of all, the serious one: empirically, Firefox just times out and gives up on downloads after a certain period of idleness from the peer, as though I somehow no longer want the file simply because the server is busy. This makes mass downloads impossible in some cases. The browser should never stop retrying until I manually cancel. But I get it: you don't want to hammer the server with endless requests that it can't handle. So what to do?

Exponential backoff is a bad idea because the probability distribution function of server downtime is more accurately modeled as a decaying power law, not a decaying exponential. Therefore quadratic backoff between retries might make more sense: 1, 4, 9, 16, 25, etc. time units between retries. But this is also a bad idea because then retries arrive more or less simultaneously across all N active downloads, which might originate from the same server. So random quadratic backoff would be preferable: a per-file random time delay between 1 and 4 time units, 4 and 9, 9 and 16, etc.

A more sophisticated approach would be to calibrate the decay exponent through training, but the benefit in terms of efficiency would be incremental. I'll leave that to you.

The bottom line is that it's never appropriate for the browser to supplant its own judgment for the user's command. It should never give up on a download even if the network disappears for a while, except maybe in catastrophic circumstances, wherein for example the server says that the file is no longer available.

Users sometimes need to launch a large set of downloads and leave them over the weekend to complete. This should be trivial and routine but it's currently a babysitting job.

Secondly, the UI issue: remaining download times are poorly modeled, even from an algorithmic perspective without any consideration for AI training over time. In the most typical case, a user is downloading from a datacenter with vastly more bandwidth to spare than the user's own connection, notwithstanding that the file is probably coming from a single server with much less bandwidth than the datacenter as a whole. This means that the peer is faster than the user in most cases. Therefore, typically, the download proceeds subject to the user's own bandwidth constraint. Consequently, the user's total bandwidth is divided among all N active downloads.

But the estimated time remaining only incorporates the current average rate of each download. It doesn't model the fact that, once a download finishes, the freed bandwidth will soon be redistributed among the remaining (N-1) downloads, and then (N-2), etc. This can make an enormous difference in the estimated time remaining, to the point that the existing estimates are uninformative. It's not too complicated to model this algorithmically and display much more accurate estimates.

There's also the current download rate as displayed, e.g. 3 MB/s, which is also uninformative because it's often subject to spikes. You're better off displaying the average download rate over the entire history for the file in question, than the rate over the last however-many seconds. In other words, look at the average download rate over the entire download process up to now, not some arbitrarily windowed subset thereof.

A much more informative number is the number of seconds for which the server has been unresponsive. There's no need to display it unless the server has been idle for at least a second. But after that happens, give a warning indicating that you haven't heard from the server for the past however-many seconds. If all N downloads are in this warning mode, then you might post another warning indicating that the network seems to be disconnected from the internet even though the local router might still be reachable. I'm sure you can improve upon this but idle period is useful information.

Please note that there are 2 major complicating factors which should be taken into a account when estimating remaining download time: (1) the N-way stepwise redistributed bandwidth model described above and (2) the empirical fact that, if we look at aggregate download behavior on large scales, it tends to decay (albeit softly) according to a power law throughout the course of the download, as a result of increasing connection management entropy (packet retries wasting time, intervening "smart" routers adding latency instead of helping anything, operating systems distracted with other tasks, cache misses, etc.). (Over very long periods of time, file transfers speed up exponentially due to Moore's Law applied to bandwidth, but this isn't the timescale of most downloads.) I'm sure you can think of yet more sophisticated ways of modeling expected download time, even including the media flushing and garbage collection latency that's the cause of the ubiquitous pause-at-99-percent phenomenon. The point is simply that there's a lot of low-hanging fruit to be harvested with respect to more accurate time estimates.

Everyone does downloads. This issue is worth your time and attention. Thank you for reading this.

I use Firefox for viewing my Rogers/Yahoo web mail in an open tab. I have granted Yahoo mail permission to send notifications and I get a Windows 11 toast notifications when there is a new email in my inbox.

The problem that I cannot figure out is that the notifications take the form of "X undefined", where X is the sender's name. There is something that is appending the word undefined to the sender's name in the notification. I also note that these notifications are "sticky", that is, they remain visible until dismissed. I would prefer that they dismiss after a few seconds and remain in the notification centre.

I am using Windows 11 Home edition with the latest updates.

WELL BEFORE BROWSING AND SAY LOOKING AT IMAGES OF SAY THE BEATLES. I WANT TO SEE ONE PHOTO SO I LEFT CLICK. ALL IT DOES IS GO BACK TO ORIGINAL SCREEN. WHEREAS FOR YEARS THE PHOTO WOULD POP UP. THAT'S MY ISSUE?

At some point I decided to use default tab wallpapers by Mozilla. With an update of home menu 151.0 , there is a new logo in the center "Firefox". You can see it on (screenshot 1). It covers any background picture, in my case a tail of the fox. I can't figure out how to hide this logo. I have one icon on my taskbar already; having it in the layout is just a redundancy. Obviously i know that i use Firefox there is no need to remind me that

A little extra note: The layout reflow of the logo works bad when the window is resized. It's not centralized.(screenshot 2).

The only band-aid that i see is in Settings >> New tabs >> Blank Page. It turns of wallpapers and whole layout of homepage which is not my target (screenshot 3).

I use Ubuntu 24.04.4 LTS , snap Firefox 151.0.1

Whenever I open Firefox in my laptop, many pop up news snippets start appearing. It disturbs me and intrudes into my work. Please stop all pop ups and notifications. Thank you.

Subbiah Arunachalam

So, I recently updated my copy of Mozilla Firefox, and I noticed something strange. The button for the built-in VPN is disproportionately large to other buttons and clickable elements. I don't see it in the release notes, so I doubt this is an intentional design choice by the UX team, at least I hope it isn't. Any help will be greatly appreciated, as it is really distracting.

If it helps, I'm using Mozilla Firefox 151.0.2 running under GNU/Linux Debian 13 Trixie as a Flatpak.