The Notion Page Cover size (1500×600px)
Notion page covers are wide banner images that sit at the top of a page, and 1500x600 at a 5:2 ratio is a practical size that fills the header cleanly without much cropping. Notion displays covers in a fixed-height band and lets you reposition the image vertically, so a wide 5:2 source gives Notion room to frame the banner nicely across both the full-width desktop view and narrower windows.
The thing to plan for is that Notion crops the cover to its band and the visible slice changes with window width, so the safe move is to choose an image whose interest is spread horizontally rather than concentrated at the very top or bottom. Since you can drag to reposition, a photo or texture with a flexible composition adapts better than a tightly framed graphic with a subject that must stay perfectly centered vertically.
Covers are how people personalize workspaces, wikis, docs, and dashboards, and a consistent set of 1500x600 banners makes a Notion workspace feel designed rather than default. At this resolution the cover stays crisp on large monitors without being an unnecessarily heavy file that slows the page. Everything here resizes 100% in your browser with no upload and for free, so your images stay private on your device. Notion adjusts how covers display and crop over time, so verify the current behavior if you want a pixel-precise banner across your pages.