PPT Merger is a free online tool, in beta, that combines multiple PowerPoint (.pptx) files into one deck. Each deck keeps its own template, so merging deck B into deck A does not break B's layout or fonts. Images, shapes, SmartArt, animations, transitions and embedded video are preserved. Everything runs locally in your browser, so your files are never uploaded to a server, and merges finish in seconds. No sign-up, no watermark, no fixed limit on files. .pptx only.
I built PPT Merger to make combining PowerPoint decks straightforward without losing the original layouts, fonts, or media. The goal is to let people merge presentations privately in their browser, without uploads or extra friction.