Diễn đàn hỗ trợ Firefox

No longer able to copy or paste text on Firefox with Windows 10. Copy and Paste are greyed out in the right click menu after selecting text. Using CTRL-C, V or P does nothing at all. Still works fine in other browsers. What has Firefox broken again this time?

For some reason when I try to download a screenshot of [this tweet] it fails every time; I tested it and it's just that tweet specifically. This has never happened before and I assume it's just a bug since copy-pasting still works. Any help with this?

Your instructions under "help" say to click on "Firefox" and click on "preferences". When I click on Firefox the menu does NOT have "Preferences" in it. What's up with that?? And how do I clear the cache and cookies?

When I open Firefox on my new computer all the bookmarks are showing at the top. I only want my default bookmark toolbar to show. The only solution I could find was to drag it into the toolbar area.

I'm trying to give permission to a website to use my microphone, but if I copy in the web address, the "Allow" button doesn't appear & so when I hit "save changes" nothing happens.

I started getting this message today - "this page is slowing down firefox. To speed up your browser stop this page" How can I fix it other than to start using Safari.

Since a day or two the font size on my Menu Bar is way too small. I have been searching around and the solutions are not working or not what I want. I do not want to zoom in, I want my page size to remain the same, I only need the font size on the menu bar back to what it was. I tried the userChrome.css method and it did not work

This problem occurs on My wife's and my machines. My wife has a printer. I do not. When we try to print the preview shows only a few lines or at best a half page. Even if we want to print multiple pages that's all that shows up. We have "print all" as the default setting. The problem started about a month ago. I think it has something to do with the newer versions of Firefox.

Hello, I want your help! Because I want to change the appearance of checkboxes to toggles without affecting the other checkboxes (like rounded checkboxes) using userChrome.css in Firefox.

I'm not friend with CSS, because I don't know much about programming. So, please write me a correct CSS code in a comment.

The attached screenshot will explain my demands:

After the last couple of updates Firefox will not wrap words in view source screen(CTRL+U). This makes the info very difficult to read as most lines of code run off the screen. How do fix this? Thanks.

How do I import the firefox passwords I saved as csv file from firefox into firefox. I am not importing from a different browser which is the only option offered. I'm importing from the newly created csv file as instructed by firefox.

Blank Page when clicking on tracking link from UPS website, https://www.ups.com/track?loc=en_US How do I fix this ? Thanks

I had ~500 saved logins on Firefox prior to it updating to version 121.0 - now I have 15.

Firefox Lockwise app on iPhone still shows all my saved passwords.

How do I get these back and why have you deleted them?

I am trying to migrate from a very old version of Firefox (v. 55) to the current one, but there is an app that is more helpful to me that all the other features combined. That is the "Tab Grouping" app that will not run in any version of FF higher than v. 55.

In my work, which often includes a tremendous amount of research, I need to be able to quickly go from one group of tabs to another. If I had to open all these sites manually, that would take the better part of the day and frankly I don't have near the mental capacity to remember the tremendous number of tabs. I have had a couple replies (Thanks!) to this question sometime back, but unfortunately none were even close in performance.

So, can anyone direct me to an app that will allow very quick movement from different sets of windows/tab groups (please see screen shots below)? Is there anyway that I can get this app to work in Legacy mode? I have several other old apps that work perfectly well in this mode.