To remove an extension from Google Chrome:

On your browser, click on the menu icon
uninstall elegantt

Select More tools > Extensions

On the extension you want to remove, click Remove from Chrome (the bin icon)

uninstall elegantt

A notice to remove the extension will appear. Click Remove.

After uninstalling Elegantt, you will be automatically redirected to Elegantt Goodbye where you will be able to clean your boards of all Elegantt metadata.

Please refer to the Chrome documentation for more details.