# Firefox - prefs.js

# Windows [click to download firefox esr](https://download.mozilla.org/?product=firefox-esr-latest&os=win&lang=zh-CN)
```
%AppData%\Mozilla\Firefox\Profiles
```

# MacOS [click to download firefox esr](https://download.mozilla.org/?product=firefox-esr-latest&os=osx&lang=zh-CN)
```
~/Library/Application Support/Firefox/Profiles
```