MS OneNote and other 65,000 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
This is a computer icon for Microsoft OneNote showing an open binder with pages of writing on the inside. inside the binder there are also rectangular tabs on the right side of the pages to quickly change to a different part of the binder. On the outside of the binder is a large, bold letter 'N'.