Why do product images seem low resolution?

When fetching product images, FooEvents POS loads the thumbnail image size as set in the WordPress Media Settings. If there are thousands of products in your store and the thumbnail image size is either set too large (> 300px) or set to ‘0x0’ which uses the original image size, it’s possible that FooEvents POS could run slowly when scrolling through products and, depending on the device, could run out of local storage or cache memory while trying to download all the large thumbnails. If you find the product thumbnail images are too low resolution, you could also increase the thumbnail image size. To learn how to reduce or increase the thumbnail image size as well as resize all previously uploaded thumbnail images retroactively, please follow this guide.