Avast Cleanup Premium scans for and safely deletes system junk and web browser data to free up disk space. Open Avast Cleanup Premium and click Details in the Free up space tile. Select the category that you want to clean: System junk: Click Details in the System junk panel to clean unnecessary junk files on your PC.
Avast Cleanup Premium has a clutter scanner that detects and removes junk files, such as app cache, log files, trash, and downloads. App also has a browser cleanup option that removes browsing data and history in all your browsers.
Avast Cleanup Premium has an app uninstaller among its feature set, too. It allows you to delete all programs and their related data, so you can rest assured no traces of the old apps are cluttering your PC.