Your product images are the most important element in your shop appearance and product presentation. We can not stress enough the impact that the following elements have on the sale of your products and the success of your shop:
Product image quality and format
Read the article Photography and image files thoroughly to ensure that your images are of the highest quality and correct format before uploading them to your shop.
Preferred product image size
Never upload product images that are smaller than 600px wide. Using larger images ensures the best results across all devices. We recommend uploading product images at 1000px or wider.
While it is not required, setting a preferred product image size ensures a consistent layout for both your product grid view and product detail pages. It is standard practice for online stores and is an important factor in creating a professional shop appearance.
Applying a preferred product image size means that you will need to scale (only scale down, never up) and crop your original product images to exactly the same dimensions before uploading the image to your Big Cartel store. In other words, the width (in pixels) will be the same value for all of your images and the height (in pixels) will be the same value for all of your images.
Before you size all of your product images, upload the images for just one or two products to ensure that you are happy with how your preferred image size looks in your shop.