PrestaShop is a widely used e-commerce platform that offers a variety of themes to customize your online store.
However, the Classic template of PrestaShop was introduced with the beta of version 1.7, but its development has not kept up with all the updates of the CMS. For example, even with the latest version, there is no support for high-resolution images for Apple’s retina display with high pixel density. PrestaShop features the option "Generate high-resolution images" in the back-end, which can be activated in: Design > Image Settings.
To be precise, as of today, I do not know of any templates that utilize this functionality. PrestaShop correctly generates 2x images for such devices if we enable the option, but these are not used. For more information, see: PrestaShop: 2x image and WebP support
As we can read here:
https://github.com/PrestaShop/PrestaShop/issues/26599
The issue will not be resolved in the Classic template; in fact, the project is almost completely abandoned and has been moved to a dedicated repository. Efforts are focused on the new template for version 8.0 of PrestaShop, which is expected to bring another important update regarding images with native support for the WebP format. There are no plans to maintain both.