Reduce a .pptx file size by recompressing the images inside it — the layouts, text, and animations are untouched. Free, no account, processed in memory and never stored.
Up to 60 MB.
Photos are re-encoded and oversized images downscaled to 1600 px.
Same deck, same slides — typically 40–80% smaller if it's image-heavy.
Savings depend on what's in the deck. Image-heavy presentations shrink a lot; decks that are mostly text or vector shapes barely change, because there is nothing to compress. Embedded video and audio are left as-is.
Presmo turns a PDF, pasted text, or a link into a designed, editable presentation in about a minute — with sensibly sized images from the start. Your first deck is free.
Try Presmo — first deck freeA .pptx is a zip of slides and media. The tool re-encodes each embedded JPEG/PNG at a sensible quality and downscales images larger than 1600 px, then repacks the file. Nothing else changes.
At normal presentation sizes, no. Images are recompressed at high quality; the layouts, fonts, text, and animations are not touched.
No. It is compressed in memory and discarded as soon as the result is sent back.
60 MB per file.
Decks made of text and shapes have little to compress. The savings come from photos and screenshots.