If you want to crop an image using the Preview application of Mac, first of all, open the picture in the application. To select the area to retain, utilize the rectangular selection tool then click the “Show Markup Toolbar” button or navigate through the tab, click “View” then “Show Markup Toolbar. Then go to the menu bar and click on tools then on crop, to save the edited image go to file then save.
Read more: How To Crop An Image On Mac