SumSlide — PPTX Editor

SumSlide opens, edits and saves .pptx presentations — the Microsoft Office file format — on your iPhone and iPad. Everything happens on the device. There is no account, no cloud and no network: the presentation you open never leaves your phone. • Open .pptx files and see them as they were made — shapes, colours, text and layouts. • Tap a title or a text box and type — editing happens right on the slide. • Add slides. • Write speaker notes. • Save back to .pptx, ready to open in any app that reads the format. SumSlide is built on our own engine, written from scratch in Rust. It is not a viewer wrapped around a web service — the file is read and written on the device itself. SumSlide is part of the SumOffice family: SumDoc for documents and SumSheet for spreadsheets.