Is there a size restriction for uploaded images?

Learning Toolbox automatically creates optimised and resized images to reduce use of bandwith without losing image quality.

For tile background images you want to make sure your that your cropped image –the square or oblong cut-out that you create using the LTB imagepicker–  has at least 400 pixels.

For your mini-Poster image you need to make sure that the cut-out has at least a 1000 pixel width, especially when you aim to have it printed.

Don’t worry about measuring this exactly, you can just add the image and then preview your stack or generate your stack summary poster to see how it looks.