When creating a Wix website, it is important to remember that Wix is a very user-friendly platform. This means that you are allowed to upload very small images (up to 1MB in size) onto your website. Additionally, Wix allows you to resize any images that you upload onto your website. Therefore, it is advisable to keep your images size to a minimum.
In most cases, it is best to keep your images size under 100KB. If you need to upload larger images, it is best to use an image hosting service such as imgur.com.