Analyse your drive with Daisy Disk

> Daisy Disk is one of several macOS applications that can help you get a visual overview of what is occupying space on your Mac. Others include Grand Perspective, CleanMyMac X, and the Storage tab in ‘About this Mac’ in macOS.

In Daisy Disk’s case, it scans your Mac, or any drive you ask it to and displays the results as an interactive circular map, with different colours representing different kinds of files. Click on a sector and it drills down to show you the files inside. If you want to preview a file, select it on the map and press the spacebar. To delete a file, drag it on to the collector at the bottom of the window.