A Keynote deck fails in front of an audience, not in the export dialog. Full-resolution photos placed across dozens of slides make the file enormous, so it takes seconds to open, stutters through animated transitions, and is too big to send to the client who asked for the slides. None of that size buys anything: a projector or a laptop screen never shows the pixels a phone camera captured.\n\nSkwish resizes images to a sensible slide resolution and compresses them in your browser, with a live size readout, so you can keep a hero photo crisp and cut hard on background imagery. Prepare every image for the deck in one batch and export the set as a ZIP before you build the slides. Nothing is uploaded to a server.