Image file behavior

Default behavior of image files (e.g., jpg, png, gif) that are located in a site’s /uploads/ directory, served by the VIP File System:

• Separate intermediate image files are not created for images that are uploaded to a WordPress media library. Instead, requested image sizes are dynamically generated using a built-in service similar to Site Accelerator (previously Photon).
• All images are automatically converted and served as next-gen formats, including *.webp files, to compatible browsers.
• Image files are served relative to the home_url of their site, so images will be on the same domain as a site. This differs from Site Accelerator (previously “Photon”), which serves files through a subdomain of wp.com (e.g. i1.wp.com).
• Responsive images are automatically supported by WordPress Core. Image markup will automatically include srcset and sizes attributes for images uploaded to a WordPress site’s Media Library.
• By default, image metadata is not stripped. If needed, logic can be added to strip image metadata on upload.