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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.

Dear Mozilla support,

I represent a company that is providing a SaaS-service, in said service our marketing teams wants to implement thirdparty scripts, but we need to make sure that those scripts don't have access to the DOM to ensure the confidentiality of the information in the service.

What I've found out so far is that fenced frames seems to be a good way to solve this, see the following https://developer.mozilla.org/en-US/docs/Web/HTML/Element/fencedframe.

However the implementation for this element is still lacking in firefox, so i'm wondering if it will be implemented and when if so. We know that the feature is still experimental but it's something we would like to test and see if it's the way forward for our thirdparty scripts.

Once I press on the message on thunderbird app it doesn't open on right side of the app like it used to do before. As you can see there is a huge open white space where I had messages before. Now I have to double click to open it in new window but that's not the way I want to have it set. Please let me know how to fix this problem.

I have been using Thunderbird for a long time, but for a few weeks/months now the search function has stopped working properly. I enter a term and don't get all the results.

I am using the version: 128.6.1esr (64-bit) Mac

Please help me

Please explain in simple terms (I am not an IT wizz) how I can stop the continual popups in Firefox 128 and Thunderbird 78 on a Windows 11 OS saying “Update Available” with a Download button very easily activated by mistake.

Each time I click Dismiss, a new popup appears either immediately or very soon. The popup blocks a significant area of the screen and will not move.

I already have Update Settings on “Check for updates but let you choose to install them”. There is no option to “Do not check for updates” on these versions of Firefox and Thunderbird. I already have Windows 11 Notification Settings on “Do not disturb” and all Firefox notifications to Off.

I have found the Mozilla Support article “Customising Firefox using Group Policy” at  https://mzl.la/3bLnw2J but I do not understand it and the device I am using is not part of a group installation setup. 

There is a Step by Step guide “How to stop Firefox update notifications” on Youtube at https://www.youtube.com/watch?v=nD-oXxrCCRs . This is clear to follow if I pause it frequently to absorb each step carefully. Is this safe for me to try given that I am very inexperienced in using the command line and accessing registry etc?

The Thunderbird popups have only recently started up and I would value advice on how to stop these safely too. I need this version of Thunderbird at present for particular reasons related to gmail so it is important I do not accidentally activate a download on that.

I can't find a way to pin my 'Favourites' panel in Thunderbird. If it's not possible, then this can be regarded as a feature request. I have a few (4) definite 'Favourites' in my list, which I regularly have to move messages to. Since I have several email accounts, some of which have largish folder trees, I often scroll down to a different account, find I need to move a message to a 'Favourite' and then have to scroll all the way back up to locate the folder. In fact, I often go to the folder directly, rather than go all the way back to 'Favourites'. Making the idea of 'Favourites' a little redundant. Outlook has a simple 'Pin Favourites' feature that keeps the pane visible, even if the other folders are scrolled down. I find this incredibly useful, and would really like this ability in Thunderbird.

Hi everyone I have Firefox 110. My husband installed it on my laptop. He died 2 years ago :( It does not automatically update. I can't update because I don't have his administrator password. Or any other useful passwords :( And I have never done anything geekish before; I am only a user. Please can anyone explain in words my mother would understand what to do with the Firefox 136 .tar file. Or even better how to work around permissions so I can get automatic updates. Pete and I worked together well to set up www.pcurtis.com but I never learned the systems stuff - I never needed to when he was alive. I am a retired academic. Anyone in the Oxford UK area who could help would be really useful. As an emergency I have just started to use the Opera browser he installed but I have no passwords for that either.... Pauline

I am a developer.I want to know the source code location in Firefox that reject tracker cookies and the code location for obtaining the tracking protection list after installation

Impossible sending e-mails regularly from a few days ago.

A message "Too many sending failures" appears though failures are a very few ones and this block increases every day.

How can be it solved?

On the "Organize your messages with filters" page, it describes how to create a filter, but doesn't describe what can be entered into the "value" field. Simple text strings are shown. Are the entries restricted to text strings, or are there special characters? Can hexadecimal values be entered?

The reason I'm asking is that I am receiving many emails where the "From:" address ends with ".za.-com". I haven't been able to get a filter to recognize that. Is the "-" (hyphen) a special or prohibited character? Is there a means of recognizing that string at the end of an email address?

Thanx!

PacemakerPete

I have a Huawei P30 Pro and beta Firefox browser. When I try to view my passwords on Firefox, it brings up a lock screen password prompt. This page requires my password, but the password is not recognized, even though it is correct. The lock screen password works in other situations but not in Firefox

When browse some websites in Android Firefox app, some website can't browse normally. I mean, the loading speed is too low to not open some websites. And some webpage were reported to wrong information.

I can't browse them, but use Chorme app can easily browse. Maybe something was lacked.