webp is a relatively new format for image compression, this format is currently supported in many modern and popular browsers such as Chrome, Edge, Opera, Firefox and …. Adding webp helps to improve the speed and quality of your web, and reduce your users’ data consumption. The plugin in front of you, without any settings or access to an external server, made webp version for uploaded images as soon as they are uploaded. No adjustments or fees are required. for more info please look at FAQ.