As a general rule, images for collection pages should be around 1200x1200px. This will give you a good balance between quality and load time, and will ensure that your images look great on all devices.
PRO TIP: If you are using Shopify to sell products online, it is important to know what size your collection images should be. Too small and they may not be clear enough for customers to see, too large and they may take up too much space on your page. The optimal size for collection images is 1200x1200px.
There are some exceptions to this rule, however. If you have very large or very small images, you may need to adjust the size accordingly. For example, if you have an image that is 3000x3000px, you may want to resize it to 1000x1000px so that it loads faster on mobile devices.
In general, it’s best to have a mix of image sizes on your collection pages. This will give visitors the best experience, and will ensure that your pages load quickly on all devices.
