Looks awesome! Have to say y'all nailed the responsiveness/feel of the UI - not easy to do, often overlooked/underappreciated, but super important. And the general concept/design is spot on, this could be very useful. Especially for early stage founders.
I have a few feature requests that would make this next-level and easier to recommend to a wider range of founders. ?makers, would you consider:
1. Let us add/invite collaborators and manage permissions. If I'm adding a cofounder in the deck, I should also be able to invite them to edit also (by email) and/or publish the OnePager in case I'm not available to do it for some reason. Not sure if I missed something for this somewhere.
2. Related to 1., make the preview link shareable (like an unlisted/private YouTube video) without requiring sign-in. I want to be able to share a near-final version of the one pager with other team members who don't have edit access, as well as any other mentors/advisors/investors, so that I can get feedback before pushing it to live.
3. Add a section like "three things we're most proud of" or "top metrics". Looking at Adam's example OnePager for FB, something like the active users statistic - 2.3 billion MAUs, wow! - should smack you right in the face when you open the one pager (probably right after Company Information and before Team) rerather than being buried in the FAQ section or in the deck.