Vertauschte-Wörter-Plugin

installation guide (Firefox):

1. Go to https://addons.mozilla.org/en-GB/firefox/addon/vertauschte-woerter
2. Click add to firefox
3. Click Add

installation guide (Chromium):

1. download it & unzip the downloaded file or clone the repo
2. open chromium on your pc
3. go to chrome://extensions/
4. enable developer mode
5. click load unpacked
6. select the folder with the plugin data