# Product images

- [Image sizes](/en/content/product-images/image-sizes.md): Image size is the resolution of the image in pixels.
- [Aspect ratio](/en/content/product-images/aspect-ratio.md): The aspect ratio means if an image is in landscape, square or portrait mode.
- [File format](/en/content/product-images/file-format.md)
- [Product image background](/en/content/product-images/product-image-background.md): Most of the product images are on a white background or transparent background. With our themes you can define a background color for the article image.