BEFORE THE DECK
A Lean Canvas you write before you write the pitch.
Nine boxes. One page. The first draft, before the polished slides.
Local AI agents that interrogate your idea — never write it for you. Nothing uploads. Nothing trains a model. Nothing remembers you.
For founders writing the canvas before the deck.
Why write the canvas before the deck
Decks lie.
Not on purpose. They lie because the format demands it. A slide has to be confident. A slide has to look finished. A slide has to fit a designer's grid. So you write a slide that says "10× growth potential" before you've found one customer who wants to pay.
A Lean Canvas is the opposite. It has a Problem box that demands you write what's wrong before you write what's possible. It has an Unfair Advantage box that's allowed to be empty for a while. It has a Customer Segments box that asks "who specifically" and won't accept "everyone."
You write the canvas first because the canvas is the place that lets you say "I don't know yet." Decks won't.
Once the canvas is honest, the deck is easy. You're just translating something already true into something visually polished. The investor isn't learning about your business in the deck — they're checking that the canvas you wrote nine weeks ago still holds.
The first draft of a company isn't a 30-page business plan or a 12-slide deck. It's nine boxes on one page that tell the truth.
What a Lean Canvas does in nine boxes.
A Lean Canvas is a one-page business model — Problem, Solution, Unique Value Proposition, Channels, Customer Segments, Unfair Advantage, Key Metrics, Cost Structure, Revenue Streams. It replaces a 30-page business plan with the nine questions a founder actually has to answer to know if the idea works.
Totally Lean runs the canvas in your browser. No account. No server. The data lives in your local storage. Three local AI agents help you fill it; a 90-second voiced pitch generator turns the canvas into something you can hand to a stranger.
When you click Start, you're editing in seconds, no signup, no email, no team workspace. Share via URL when you want someone in. Export JSON when you want a copy.
Other ways founders frame the same canvas.
The same nine boxes, framed for different moments. Pick the one that fits where you are right now.
- NOT A SPREADSHEET · NOT A DECKThe Lean Canvas for the business plan you'll actually open.
- FOR THE 11 PM IDEAThe Lean Canvas you draft the night you have the idea.
- NO ACCOUNT · NO SERVER · NO ROOM FULL OF PEOPLEThe Lean Canvas that never leaves your laptop.
- TYPE · HEAR · SHIPNine boxes. Ninety seconds. The Lean Canvas with a voiced pitch.
Frequently asked
- When should I write the canvas vs the pitch deck?
- Write the canvas first. The canvas is where you say "I don't know yet" about your customer or your channel — answers a deck format won't tolerate. Once the canvas is honest, the deck is just polishing what's already true.
- Do I need to fill in every box?
- No. An empty box is a real answer that points at the next thing to figure out. The canvas is happy to be incomplete; that's what makes it useful before you have the answers a pitch deck demands.
- What goes in the Unfair Advantage box for an early startup?
- Often nothing yet. Unfair Advantage is something a competitor can't copy quickly — network effects, proprietary data, founder-market fit, regulatory licenses. If you don't have one, leave it empty and revisit when you do.
- How do investors use a Lean Canvas?
- As a pre-meeting filter and a post-meeting reference. The canvas shows whether the founder has thought through the nine load-bearing questions; investors who read it are checking that the deck's promises are anchored in actual structure.
A Lean Canvas you write before you write the pitch.
No signup, no server, no email. Open the editor and start sketching.