The image didn't upload. Sorry.

Hi, I think it can be removed by typing in the address bar about:config Copy/Paste to top of that new page in search bar : media.navigator.permission.disabled double click it to change it to true. This will only remove the popup.

The add-on that used to do this is not available any longer.

Keep a copy of this to reverse it if need to remember.

Someone else may know more on this.

Hi, thank you for your answer. But it doesn't work. It remove the permissions but not the icon. I hope that someone else can help me, but thank you again :)

Hi smalltheif, there is no built-in way to remove that icon.

You can use a custom style rule in a userChrome.css file to hide it or to make it more transparent. I haven't experimented with this myself, but here are a couple resources if you want to give it a try:

• https://www.reddit.com/r/firefox/comments/78pjz1/how_do_i_remove_this_microphone_indicator/
• https://www.userchrome.org/how-create-userchrome-css.html

Thank you very much, there is the solution in the first link.