Changing Canvas Background

While it’s not currently possible to change the background of the entire Whimsical board canvas, you can sneak in the following workaround:

  1. Create a huuuge rectangle
  2. Lock it
  3. Create awesome content on top of the locked rectangle a.k.a. background

You can also place the rectangle on top of existing elements, just make sure you move it to the very back of the board and lock it: