FAQ
How many slides can it handle?
Up to 80 slides and 20 MB per deck on the free tier. Longer decks should be split in two; each half runs in about 30 seconds and nothing is shortened.
Most lectures are 20 to 60 slides, well inside the limit. A whole-unit deck of 120 slides is better split at a lecture boundary, because the notes stay complete and each half comes back quickly.
Very text-heavy decks can also hit the length the model reads in one pass. When that happens the notes say so at the top, and the middle of the deck is shortened. Splitting the file fixes it.
File size is almost always images. Compressing pictures in PowerPoint (File, Compress Pictures) or exporting to PDF brings most decks under 20 MB.
Updated 2026-11-03.