Firefox Community Forum

My computer was slowing down so I opened task manager.

I discovered that Firefox had 40 different things running and was using over a gigabyte of memory. I could not identify what the various things Firefox was running. Or what tab they related to.

It would be useful if Firefox could indicate in tax manager, what is going on and permit me to end task individually rather than shutting down the entire browser.

Meantime, what can I do to keep this from going on?

I have already shut down Firefox several times as well as restarted my computer to no avail.

Also cleared the cache and cookies

When I open a PDF in Firefox, a box covers the right half the page demonstrating the highlighter tool. It never leaves. It blocks half the page and prevents me from reading and/or printing. Please help. It's making my work impossible.

For some time now, firefox literally has NO horizontal scrollbar, even on sites when it is clearly needed.

How do I make it visible? Is it a Windows 10 & 11 thing?

Also, before anyone suggests it, several posts online mention to go to Settings > General > Browsing > Always show scrollbars. These posts are over a year old, however, and this option DOES NOT exist.

Thanks in advance.

How do I fix firefox browsing on a laptop when I can login to an account but NOT be able SEE a page after it loads? It has always worked until I think outlook interrupted my browser with a mail notice while firefox was negotiating my request.

I tried it on another computer using fiefox and it works as expected.

I have cleared my history and that one request still fails to display the page to enter needed info to continue. It seems that one process interrupted by outlook somehow corrupted something for that one request.

Weather I initiate the login from the firefox most s login's OR type the web site in the command line in firefox makes NO difference!

I need to fix this on one computer. I would also like to STOP outlook from randomly interrupting me with mail notices as they come in.

On Debian 12 running XFCE the shutter function in the top right orner is missing. This is a option like close, minimize, maximize that allows Linux GUI to only see the title bar, so it is out of the way of other screen applications. It is represented by the caret.

See enclosed

I'm expressing a strong dislike for the very shortened list of paper sizes in Firefox in the Print function.

One big reason I use Firefox over Chrome and MS Edge is the long list of paper sizes. Now the list is a small fraction of what was there. And how many people know what sizes are the likes of A4, B3, JIS-B4. It takes extra time to figure out what works best.

The old list with Letter Plus, Letter Extra, Legal Plus, etc. was MUCH MORE useful. If I were to eliminate anything, it would be the meaningless A5, B5, etc.

At least give us an option of the old or too short new list of paper sizes.

If my comments aren't appropriate in this forum, please provide a link to where I can submit it.

Hi,

I'm working on a Firefox extension where I need to detect print event. I've tried the following approaches:

• beforeprint – Fires immediately when the print dialog opens (works correctly in Chrome).
• afterprint – Fires immediately when the dialog closes (works correctly in Chrome).
• window.focus and visibilitychange – Work inconsistently with noticeable delay, depending on how Firefox handles focus/visibility updates after closing the dialog.

Questions: 1. Is there a reliable way in Firefox to detect print event? 2. Are there any known workarounds or events that could be used for this purpose?

Thanks.

Hi, I've been receiving the following rejection message as follows: jino.ru rejected your message to the following email addresses:

postmaster@pop3-server-spam.org The address you sent your message to wasn't found at the destination domain. It might be misspelled or it might not exist. Try to fix the problem by doing one or more of the following:

   Send the message again, but before you do, delete and retype the address. If your email program automatically suggests an address to use, don't select it.
   Clear the recipient AutoComplete cache in your email program by following the steps in this article: Status code 5.1.1. Then resend the message, but before you do, be sure to delete and retype the address.
   Contact the recipient by some other means (by phone, for example) to confirm you're using the right address. Ask them if they've set up an email forwarding rule that could be forwarding your message to an incorrect address.

The sender of the email gets those message. I get them also but I'm also getting the message that they send me. It's only doing it with my outlook account. Why is that? I checked it directly on the Outlook website and everything is OK. I can't understand why this is happening.

I created a new iframe and added a new value in its contentWindow, and changed the src of the iframe like below.

``` (() => {

 const frame = document.createElement('iframe');
 document.body.appendChild(frame);
 frame.contentWindow.testASDF = 'TEST_VAR';
 frame.src = 'http://localhost:5500/test/iframe.html';

 setTimeout(() => console.log('testASDF: ', frame.contentWindow.testASDF), 3000); // I expect 'undefined', but 'TEST_VAR' printed.

})(); ```

I thought the 'testASDF' value would be gone after the iframe loaded the new src, but the value I set remaining even after the iframe loaded anew. In Chrome, it's not reproduced.

It only happens when I set a same-origin iframe src and modify the src synchronously with the line above. For example, the script below doesn't reproduce the problem.

``` (async () => {

 const sleep = (ms) => new Promise((res) => setTimeout(res, ms));

 const frame = document.createElement('iframe');
 document.body.appendChild(frame);
 frame.contentWindow.testASDF = 'TEST_VAR';
 await sleep(1); // asynchronous routine added
 frame.src = 'http://localhost:5500/test/test.html';

 setTimeout(() => console.log('testASDF: ', frame.contentWindow.testASDF), 3000);

})(); ```

Is this a bug or optimization of Firefox?

UA: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:137.0) Gecko/20100101 Firefox/137.0

I have a different theme and cursor on my system. I would like to include them in Zen Browser. They are Candy Mac and Azenis respectively. There is no setting to do this. Many other browsers have System themes as an option.

Since FF35, using linux with e26wm, the title bar is gone. Screen seems to be stuck in full setting - F11 just shows/hides top right min/max/exit toggles. Min/max doesn't work. Going to customize toolbars, title bar option is there and checked but the option itself looks like it is grayed out (lighter color). Screen cannot be resized. I am used to a menu accessed via rt. click on the title bar but that is gone (I do have access to that menu with combo alt/rt-clk anywhere on screen - see below). That menu had a shade option (window shade like) which I used extensively but thats gone. If I click alt-rt click anywhere on the screen, I can get my missing control menu back without the shade option but with a borderless option checked which cannot be changed. I am fully aware that linux + E26 is kinda out there but have been all over my settings (includes border settings which firefox ignores). I can't find any permission settings on config/js/pref files which may be a cause. Thing is, mozilla thunderbird's screens work and title bar is in place with desired menu, etc. as do all other apps except ms edge, which leads me to feel it is a firefox setting somewhere and I believe it is the side thingy that everyone seems to love in chromium/chrome might be the cause - the tabs on top option which I don't have an interest in. Sorry for the length here but I'm at my wits end and all a google search offers (here as well) is to go customize etc. etc. Any thoughts would be greatly appreciated - been using FF on linux since day 1 without any problems I couldn't figure out till now.

I downloaded a PDF and used Firefox to view the file. I'm trying to find key words in the PDF and I always get phrase not found. As a test I inputted a word I found in the document but find in page stated phrase not found. What am I doing wrong? I remember that I have used that feature in the past and it worked.

My account was probably hacked. I noticed this from an email I received from Mozilla. My account was logged in from Africa, which i noticed from the timezone because the email gives literally no detail. I logged into my account to kick them out but i found out i couldnt because the button didnt work. All the other kick buttons worked except the hackers. Mozilla has done nothing other than to email me.