Chrome extension installation from source

1. Clone or download this repository
2. Navigate to chrome://extensions in Chrome address bar
3. Enable the "Developer mode" checkbox (located in top right corner)
4. Click on button "Load unpacked" (located in top left corner)
5. Select the extension directory "src"

Opera extension installation from source

1. Clone or download this repository
2. Navigate to opera://extensions in Opera address bar
3. Enable the "Developer mode" checkbox (located in top right corner)
4. Click on button "Load unpacked" (located in top left corner)
5. Select the extension directory "src"

Firefox extension installation

Download extension from official Mozilla Add-ons website

More browsers to come...