This is a basic Google Chrome Extension template using Manifest v3.
Official Google Chrome Extensions Docs.
- Click the three-dot menu in the filetree and press the Download as zip button
- Unzip the on your local computer drive
- Go to the Extensions page by entering chrome://extensions in a new tab. (By design chrome:// URLs are not linkable.)
- Alternatively, click on the Extensions menu puzzle button and select Manage Extensions at the bottom of the menu.
- Or, click the Chrome menu, hover over More Tools, then select Extensions.
- Enable Developer Mode by clicking the toggle switch next to Developer mode.
- Click the Load unpacked button and select the extension directory.
Follow the instructions here