Forcing Instagram images to resize uniformly within feeds

When using the WP Instagram Widget, we typically recommend selecting the “Large” size setting for your photos so that they appear crisp on retina displays. However, if you find that the images in your Instagram feed are not the same size, that means you are not uploading photos to Instagram at a large enough size to use the “Large” size setting in the widget. If possible, we recommend uploading images to Instagram that are at least 640 x 640. If you upload a photo that is smaller, you’ll need to change your size setting on your widget to “Small.”