We are happy to announce that Pixo now fully supports the WebP image format, both in the Image Editor and the REST Editing API. You can now send a webp image to Pixo Editor or the REST Editing API and get the final result again in webp or any other supported output format (png or jpeg).
According to caniuse.com all modern browsers support webp format nowadays. Although older versions of Microsoft Edge browser does not support it, our usage statistics for the past 3 months show that none of our users use the non-Chromium Edge anymore. So using webp format should be safe.