Resize Image Pixels In Windows - To make a square picture, you need to specify the same width and height in pixels, for example, 1080x1080 (this size is used on the website instagram.com) and select in settings cropping of.

There's also some settings for cropping or filling if the image proportions differ from the simply drop the images onto the window or browse your computer, select the resize method and its options, then click start resizing.