I-Firefox Community Forum

I use several browsers and when it comes to functionality I consider FFox to be the best however with 1 major drawback - it's speed / lag issues which is why I stopped using it as my primary browser and only as secondary one

I can have 2 different Chromium based browsers open simultaneously and while this impacts the performance somewhat if I open Firefox and another browser responsiveness grinds to a halt (sometimes even crashes)

Even just starting Firefox by itself takes 5x as long as other browsers

So I'm wondering is Firefox just more resource intensive or is there something wrong with my setup?

The main difference between my Firefox install and my other browsers is the number of Bookmarks (10000s) due to me having it installed for much longer so is it possible for a large number of Bookmarks to slow the browser down even when not open ?

Other possible causes I read elsewhere are 'Cookies and site data' (currently around 50mb)

I clear the 'Temporary cached files' & 'Browsing history' on regular basis so they shouldn't be an issue

The add-ons I have installed are NoScript , Ublock Origin & Firefox Color

In regards to troubleshooting is it possible to install a 2nd install on the same system simultaneously without overwriting the current one ?

Thanks

Dear Sir,

Firefox is not working with Rabby Wallet and Metamask extensions.

It does no pop-up the window to see the transaction and sign it. Firefox 134.0.1 (64-bit). Windows 10 Home.

On Metamask at least I can click on the pinned extension and see the window. However it´s not the expected behavior, because it should open the pop-up automatically. With Rabby wallet it is impossible to proceed, even clicking on the extension icon.

Please fix it.

Hello

With the new update to Firefox v137 I am no longer able to sign in to Government sites using my bank as a sign in partner. Google Chrome will sign in so it has something to do with the new update. I have cleared cache and all data and still no luck with the sign in. Any help would be appreciated because Firefox has been my default browser for years and I'm not interested in changing.

Regards

Roger Flagg

Hello, After Firefox removed about:config option from Beta and Nightly, can you tell me how to remove Header and Footer when I print documents? I don't want to include URL, dates, times etc. but a clean document or file?

Hi,

I am the developer of the Dictionary Anywhere extension which is a Firefox recommended extension. Recently my extension stopped performing up to its expectations due to backend changes in public API that it uses to find meaning of the words.

However, I am unable to modify the code of extension to fix the issue as I am not able to login to my account due to it being behind MFA, and I have lost access to the phone which contains those MFA codes.

Can something be done here, to allow me to update the extension to rectify the issue that 50k users who use this extension regularly are facing? For example, can the extension be transferred to another account through which it can be updated, lots of users are suffering as the extension is not working. I have access to the source code of the extension .

Thanks and Regards

My monitors are QFD ( 2560 x 1440 ) and I use font scale 125%. With the most recent Firefox these fonts are garbled. They do not display properly. I am using MS Edge for the time being.

Since April 5th I have lost spell check in the message pane of the emails I type on outlook.live.com It still works in the subject line, but not the message area.

Windows 10 pro 22H2 updated to end of March, when spell check was still working well. Firefox 137.1 English Canada Language selected (has worked well for years)

I go to outlook.live.com to read and answer my @hotmail.com emails.

When right clicking on a misspelled word in the message area I get only these options, Firefox does not give me the usual options.

I am currently having other problems on that site, clearing outlook.live.com cookies does not clear the problems.

I use Gmail, and when I receive a newsletter from the local government, Gmail does not display the images in the newsletter. I've set Gmail to display the images (photographs), so I'm guessing Firefox must have a setting that is blocking the display?

Two financial websites I normally look at with firefox suddenly have no images anymore. I think it's the last Firefox update that caused it. Both websites look okay with Chrome.

Last week, all 11 of my Firefox extensions, which I've been using for years, were suddenly disabled. For each I got the same message: "[Extension name] could not be verified for use in Firefox and has been disabled." Following Firefox's instructions, in about:config I switched "extensions.langpacks.signatures.required" to FALSE, restarted my computer, but nothing changed. I tried reinstalling the extension Adblock Plus from Firefox's own list of add-ons, got the message "Installation aborted because the add-on appears to be corrupt." Any idea what's going on and what I can do?? Thank you.

iMac OS 10.11.6 El Capitan; Firefox version 78.15.0esr (64-bit)

On my Macbook Pro — OS 12.7.6 Monterey, Firefox version 136.0.2 (64-bit) — the same extensions work just fine.

On some sites, some Chinese characters will display as completely blank. It's only some characters, and it's only on some sites. I know one would be inclined to say the site just doesn't have correct settings, but that doesn't seem to be the case because this issue only appears on Firefox (Chrome doesn't have this issue for the same sites). (Sometimes even on the same site it will be inconsistent whether it displays... Like the Google search results will display Chinese fine, but the text typed into search bar itself will display incorrectly.) The font it displays in also appears to be inconsistent, but I don't mind that as much.

I've tried changing the default font to both Microsoft YaHei and SimSun - neither changed anything regarding my problem.

I've seen other people with similar problems be recommended to figure out what fonts are being used via inspect element, but I haven't found any example providing what exactly you're to do after you've found that information out. However, if it helps, I did that and found out the fonts being used were MS Gothic, SimSun, and Yu Gothic, though I don't know which one is causing which issue, or what I'd do about it even if I did know.

Here's an image as an example - as you can see, some characters are fine, some display in a different font than the others, and some don't display at all. I would very much appreciate advice on what to do from here.

Hi people,

I have used Firefox for years but after the latest Microsoft Update it no longer starts or runs. Another product, Libre Office, also failed at the same time and I have been unable to resolve that problem either.

I have uninstalled Firefox, downloaded a fresh copy from the Mozilla website and reinstalled it a couple of times but when I click the desktop shortcut nothing happens. I can right click the shortcut and select the "run as administrator" command and something like the Firefox browser opens but all my shortcuts are out of date on it and the browser will not access anything on the net.

I also use Mozilla Thunderbird as my email providor and that is still functioning normally.

Is this some monkey business from Microsoft, a fault in Firefox or a fault somewhere in the inner workings of my computer?

Kindest regards, Colin Ballard, 23 January 2025

Some Firefox option is adblocking some links in Publishers Clearing House emails. The same emails work OK in Safari. There are no adblockers (now or ever installed) on this Mac. It's not the end of the world for me but it should be fixed for possible future use.

I keep getting nuisance popup prompts to sign into an old gmail account I had linked to my firefox program. I have since deleted this email from firefox and closed the gmail account but keep getting these popups asking me to log into this old gmail. How do I fix this??

When using Google Meet in Firefox browser, I am only able to share my window, not my screen. When I choose "share screen", it says I must change my permissions - but my permissions settings have not changed and this is a problem I have started having only in the last few days.

I do not know where I am supposed to change these permissions settings.

I have checked my permissions in settings > privacy & security > permissions - there is nothing there about screen sharing.

I have checked my permissions in padlock > connection > more information > permissions and the only options I have for screen sharing are "always ask" (default), which is set. The only other option I have is "block" which is not set.

My Firefox browser is up-to-date.

Can anyone help? Thanks!

I normally use Firefox Developer Edition, version 127 because any later version always freezes my whole computer (probably because I'm using a 15-year old PC). Recently all my extensions became disabled. I'm now also unable to install any extension because it says "Installation aborted because the add-on appears to be corrupt". I found some instructions on Mozilla website about deleting compatibility.ini and extensions folder, but it didn't solve the issue. Now I'm stuck and confused as I suspect some of the extension files that should be in my Profile folder may not be there.

The simplest solution in this case would be to use the "Refresh Firefox" option which resets everything to default settings, but every time I do it my computer freezes until rebooted. Uninstalling and reinstalling manually is also not the way to go, because it retains all the settings.

I've tried installing the standard Firefox browser (v. 119) alongside the Developer Edition but the same issue is there as well.

I'm looking for an alternative way to get a clean Firefox install, so I can fix my extensions.

Additional info: - Your system specs? Windows 10 64-bit, 4 GB RAM, Pentium Dual-core, no GPU - Hardware acceleration? Disabled. - Using any mods? Yes, two. Geckium for Firefox, which always works fine. The recent issue started when I played around with Revert8Plus, but it initially worked without issues.

Suddenly i do not have access to a website and only this. the domain is wetranfer.com Actually i do not have access with any browser. not only mozilla firefox I use the default Microsoft defender but i can't find anything in firewall that blocks access to this site. Any help?

The other day, several of my extensions were automatically uninstalled from a bunch of my devices. After going through and reinstalling most of them, the reinstalled extensions don't seem to be propagating to other devices via sync. Newly installed extensions that I didn't have installed before seem to propagate fine. Is there some way I can fix the extension data on my account so that they start syncing properly again?