Guy Kawasaki (chief evangelist of Canva) presents his "10/20/30" rule for presentations: use 10 slides, speak for 20 minutes, and use at least 30-point font. He frames the rule as a practical guideline for focusing content, keeping talks short, and making slides readable (mentions Steve Jobs' much larger fonts as an extreme example).
Chapters
Hi, I'm Guy Kawasaki, chief evangelist of Canva, and I'm here with my friends at Click. And today I'm going to explain to you the Guy Kawasaki rule of PowerPoint, Canva, Keynote, whatever you're using. It's called the October 2030 rule. So the 102030 rule is 10 slides, because that's all you can reasonably expect to communicate. 10 ideas, 20 minutes, because you need to get it done quickly. You don't have an hour anymore. And 30 points. 30 point is the minimum size font in a great presentation. The bigger the font, the better the slide. Just FYI, Steve Jobs slide, 190 point font. It's unlikely that you're Steve Jobs, so I'm giving you a lot of grace. 30 points, 10 slides, 20 minutes, 30 points.