Does Avast have a Chrome plugin?
Yes, Avast features a Chrome plug-in. To install it, you can either install Avast Antivirus or use the homepage on the Chrome Extensions page. If you choose the first method, then you have to make sure the Chrome browser is closed. When you open it, you have to accept the installation. A window will alert you about this.
Chrome Extensions URL: https://chrome.google.com/webstore/detail/avast-online-security/gomekmidlodglbbmalcneegieacbdmki?hl=en