10/20/30: Ten slides, twenty minutes, and 30 point font. That’s what early Apple employee Guy Kawasaki recommends for great presentations.
You might need a few more — or fewer — slides, but the basic idea stands. The best presentations make the best out of a handful of large graphics and text. You want everyone in the crowd to easily read your slides and to focus mainly on your talk itself. A handful of slides, each with a clear, concise statement, is your best bet.
Source: https://zapier.com/blog/best-powerpoint-alternatives/?utm_content=buffercca81&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer
