Hi @dimitris212
Thank you for contacting us!
Yes, Imagify can convert JPG images to WebP and this can happen during the image optimization procedure and if you have the “Create WebP” option enabled through Settings > Imagify.
Once the WebP version is created then you can enable the display WebP option(Settings > Imagify) so that the WebP versions will be displayed on your site.
Please find additional information through the following links https://imagify.io/documentation/enable-webp-images-works/
https://imagify.io/documentation/how-to-check-if-webp-image-is-displayed-on-your-site/
Let me know if you have further questions. I’ll be happy to help.
Best Regards,
Ioanna