How many slides should a pitch deck have?
Based on advice from Aaron Harris (Y Combinator), DocSend research · Updated 2 October 2026
Short answer
Y Combinator's seed template has 9 sections, and Aaron Harris says each should be one slide if you can manage it and never more than three, with the title as exactly one slide. In practice that's about 10 to 15 slides. The real seed decks in the PitchMagic library range from 8 slides (Intercom) to 25 (Uber).
What famous seed decks actually used
The slide count of every real seed deck in the PitchMagic library:
- Intercom (2011): 8 slides
- Coinbase (2012): 11 slides
- Buffer (2011): 13 slides
- Airbnb (2008): 14 slides
- Notion (2013): 16 slides
- Dropbox (2007): 17 slides
- Peloton (2011): 17 slides
- Uber (2008): 25 slides, written before the app existed, so it spends many slides explaining the idea
Why shorter decks get read
DocSend tracked how investors read decks and found they spend about 3 minutes and 44 seconds on a seed deck. At 15 slides that's around 15 seconds a slide.
That's why YC's template asks for clarity and concision. As Aaron Harris puts it, most seed companies don't have much meaningful detail to explore yet, and decks that pretend otherwise lose the investor.
In your deck
Count your slides per section. Any section over three slides is a candidate to cut, starting with the ones that don't move the story forward.
Real examples
Intercom (2011) · slide 1
Intercom's first deck, which raised its seed round, has just 8 slides.
See the whole Intercom deck
Coinbase (2012) · slide 4
Coinbase raised its seed round with 11 slides. Slide 4 makes the market case with one number: $2 million a day in bitcoin volume.
See the whole Coinbase deck
Airbnb (2008) · slide 14
Airbnb's 14th and last slide is the ask: a $500K round for 12 months to reach 80,000 transactions. The whole story fits before it.
See the whole Airbnb deck
Read the originals
- How to build your seed round pitch deck · Aaron Harris (Y Combinator)
The template the 10 to 15 slide guidance comes from.
- Pitch deck metrics · DocSend
How long investors actually spend on a deck, from DocSend's data.
Questions founders ask
- Is 20 slides too many for a pitch deck?
- For a seed deck, usually. YC's template has 9 sections and says no section should need more than three slides, and most should take one.
- What is the 10/20/30 rule?
- Guy Kawasaki's rule for presenting a pitch: 10 slides, 20 minutes, and no font smaller than 30 points.
- How many slides should a Series A deck have?
- YC says its seed template is not all that different from a Series A deck. You'll usually need more slides for metrics, but the same sections and the same discipline apply.
Get your deck reviewed the same way.
Comments on every slide, the words to change highlighted, and the 3 fixes that matter.
Keep reading
- How to build a seed pitch deck: YC's template, slide by slide
Y Combinator's seed deck template explained slide by slide: title, problem, solution, traction, insight, business model, market, team and the ask.
- How to make the traction slide in your pitch deck
What YC says goes on a pitch deck traction slide, with real examples from YouTube, Coinbase, LinkedIn and Uber, and benchmarks for good retention.
- How to make the title slide of your pitch deck
What goes on a pitch deck title slide, per Y Combinator: your name and one line on what you do. Plus Kevin Hale's test for any slide, with real examples.
- How to write the problem slide in your pitch deck
What YC says goes on a pitch deck problem slide, Kevin Hale's six signs of a great problem, and how Airbnb and Uber framed theirs.