How many slides should a pre-seed deck actually be?

On Round Funded we score pre-seed decks against what angels actually open, and the slide count is almost never the first thing that kills you. Packing is. Ten to twelve slides is usually enough: problem, solution, why now, market, product, traction or early proof, business model, go-to-market, team, the ask. Fifteen starts to feel like you are justifying the deck instead of the company. Twenty-five is almost always a strategy memo with a title slide. Cut anything that does not change a yes/no. One metric per slide beats three charts. If a slide needs a voiceover to land, it is not ready. Use this free check before you send: https://roundfunded.com/en/tools...