I'm not sure how this will impact the future of this extension, but news has it that the Wikimedia Foundation has given up on Electron and established a (renewed) partnership with PediaPress: Reading/Web/PDF Functionality
Topic on Extension talk:ElectronPdfService
Hey @Cavila
thanks for that update, I forwarded the info to our team so we can further watch the development.
Have a nice weekend :-), best,
Christoph