Pinterest is the one major platform built around a vertical feed, and that single fact decides almost everything about pin dimensions. A pin does not compete for attention in a row — it competes for height in a column. The taller it is, the more column it occupies, right up to the point where the platform cuts it off.
The recommended pin is 1000 × 1500 px — a 2:3 ratio. This is not an arbitrary preference. 2:3 is the tallest shape that displays in full in the feed; go taller and the pin is truncated, with the bottom hidden behind a “see more” interaction that most people never perform.
So 2:3 is the sweet spot: maximum vertical presence, nothing cut off. If you make only one size, make this one.
Video pins follow the same vertical logic but go further: 1080 × 1920 px (9:16) is the full-screen format, matching what every other short-video surface uses. A 2:3 video also works and keeps the feed layout consistent.
Because 9:16 is taller than 2:3, a video pin designed at 9:16 will be letterboxed or cropped in the feed preview. Keep anything essential — a title, a face, a price — in the middle of the frame.
Pinterest accepts PNG and JPG, with a generous size ceiling — but generous is not a target. A 1000 × 1500 JPG at quality 85 lands around 200–400 KB, loads quickly, and looks identical to a 3 MB version on any phone.
Format choice follows the usual rule, and it matters more on Pinterest than elsewhere because so many pins carry text. A pin that is a photograph belongs in JPG. A pin that is a text overlay, a chart or a flat-colour graphic belongs in PNG, where the lettering stays crisp.
Most pins start life as something else — a product photo, a blog header, a screenshot. Turning one into a pin is two operations, in this order:
Only then compress, and only if the file is unreasonably large.
The one number worth memorising is 2:3. Everything else on Pinterest is a variation on it.