FoxReplace rocks. Been using it for about 11 years. People online grow dumber and more aggravating every year but this add-on keeps their crap off the screen, easily and reliably.

Simple clear and easy to use so far. Search and replace text, it does what is says. Haven't done extensive testing to see if there are any issues as others have reported, but has been pretty solid for me.

What is the privacy policy of this add-on? Will change the rating to 5 if addon is privacy-respecting.

Makes the internet more bearable for me.

edit:
The extension seems to disable itself anytime I restart Firefox. Is there any way to fix this?

Literally makes the internet tolerable

很好用的扩展，帮助挺多的呢

Very very good, you can use an * in the menu for selecting which URLs replacements apply to

卓越された文字置き換えアドオン。
不愉快なワードを見えなくすることも出来るし、
ライティングの置き換えツールとしても重宝している。
また、ページ読み込み時にワードを自動的に置き換えしてくれる面でもText formerよりも優れているかと。

simple et efficace !

This thing is great. One piece of feedback is maybe let us have a toggle to have this addon snap to the bottom like where the vanilla Find feature is located. The toggle would still allow people to have it on left like it is now. Is this extension acting as a sidebar? I guess that could explain why it snaps to left...

Even better when you replace CTRL+F (and even F3), which this does not do by default. You can do this in AHK v1 with this script:

#IfWinActive ahk_exe firefox.exe
Ctrl & F::
SendInput {Ctrl down}{shift down}{F9 down}{Ctrl up}{shift up}{F9 up}
return

#IfWinActive ahk_exe firefox.exe
F3::
SendInput {Ctrl down}{shift down}{F9 down}{Ctrl up}{shift up}{F9 up}
return

Upgraded to Win 11 this extension stopped working. This extension has been like my right arm. Not sure if it's win 11 or Firefox 108.0.1 (64-bit). Continuing to struggle
It was me, a little tickbox not ticked.