This tool builds a genuine PowerPoint file (the same Open XML .pptx format PowerPoint, Keynote and Google Slides open) directly on your device. Each image becomes its own slide, sized to fit the slide while keeping its aspect ratio.
Because the presentation is generated locally, there are no upload limits and your images stay private. Choose a widescreen (16:9) or standard (4:3) slide size, and whether images should fit inside the slide or fill it.