Is there a way to add code to make all product thumbnails display as the same size on catalog pages? So for example have all photos display as squares in the below screenshot, but then have the original photos still when you click on the product. I'm trying to avoid having to manually crop all of my photos.
You can rework your code to use background images instead of regular images and then give your container a specified height and width:
Or alternatively you can give the images a set width and height with CSS and set the image element's object-fit property to "cover":