The canvas is the virtual paper you sketch on. When you open Sketchbook, a default canvas is created for you.
What is the size of the default canvas?
The default canvas is based on the width and height of your screen. In Sketchbook Pro on Mac and Windows you can change the default size of a new canvas in Preferences. In Sketchbook on Android and iOS, you can change the canvas size in the New Sketch window, or use one of our presets. For more information, read Creating a canvas.
What are the canvas units?
Sketchbook Pro on Mac and Windows offers pixels/inches, pixels/cm, and pixels/mm.
Sketchbook on mobile devices will offer dimensions in pixels by default. If you want to be able to work in pixels/inch or pixels/cm, you will need to get the Premium Bundle.
What's the difference between ppi and dpi?
Let's start with what each stands for:
- ppi is pixels per inch
- dpi is dots per inch
Both are used to describe the resolution of an image. PPI describes screen resolution (what you see on your monitor); whereas DPI describes print resolution (the number of dots of ink used for printing an image with a ink jet printer).
How will the resolution of an image affect file size?
PPI and DPI are metadata in the file, changing the resolution does not affect the file size or the pixels of the image. The physical printer hardware uses this file metadata information to determine how to properly apply the pixels to the paper.
