Interface density: why power-user tools should look dense and consumer apps shouldn't
Linear, Superhuman, and Bloomberg look dense on purpose. Airbnb, Notion, and Stripe look roomy on purpose. Here's the rule we use to pick a density for a given product.
Priya Sharma
Product & Design Lead
Density in interface design is often treated as an aesthetic choice, but it's really a strategic one. It communicates who the tool is for, how often they'll use it, and how much they already know.
The rule
The more often someone uses a product, the denser the interface should be. A person opening their email client fifty times a day can't afford padding; a person booking one flight a year can't afford confusion.
What dense actually means
- Smaller type (14px body, sometimes 13px) — trusts the user's eyesight
- Tight row heights (32–36px) — more info on screen without scrolling
- Keyboard-first — the user learns shortcuts because they use the tool every day
- Data over decoration — charts and tables instead of hero images
Where the rule breaks
Dense interfaces exclude casual users. If your product has both daily power users and occasional visitors, you need two modes — a dense default for the power users and a simplified onboarding or embed surface for everyone else.
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