Docs: Image Optimizer
Yes, because meta data usually not too big, however it can contain important information (eg copyright), Image Optimizer will keep meta data for images.
Yes, Swift Performance can generate WebP version for your images, also there is an option to serve WebP images with rewrites or convert <img> tags to <picture> and let compatible browsers to use WebP instead the original image.
Yes, optimized images will stay optimized even if you uninstall Swift Performance.
We provides an Image Optimizer API. WordPress will send the image to our API server, it will optimize it and send it back. In that way it will be quicker, better quality and it will use our CPU instead of yours.
Yes, the premium version comes with an unlimited Image Optimizer, which means it is truly unlimited for domains and images, and already included in your subscription. You can optimize all of your images without any additional fee. There is a technical 10Mb size limit, however with normal usage yo...