Make a photo square online - batch and free

Tutorial video

YouTube Tutorial video

Also try the following services:

Batch resize an image. Stretch the image to a specified size or cut out an area
Resize photo to 600 x 600 pixels online - batch and free | Resize photo to 128 x 128 pixels online - batch and free | Resize photo to 64 x 64 pixels online - batch and free | Resize images to 15 x 20 format - batch and free | Resize photo to 2048 x 1152 pixels online - batch and free