The ideal image size depends on the purpose of the image that you're uploading, either for the logo or for an image in your Waybook.
For your logo:
We recommend a logo size of 60 x 200 px to ensure the best size and resolution when branding your Waybook.
For images in your Waybook:
These can be uploaded in any size, ratio, and dimensions that you want to display in your Waybook. You can easily drag to resize images once uploaded into your Waybook.
For images in tests:
While again you can upload any image size, we recommend uploading square images sized at 300 x 300 px to your test steps in Waybook.
We'd also recommend considering what the size of the image looks like in the step that you are creating. Consider whether you're looking to create a page with mostly one image that delivers your information or should the image be a smaller addition to complement your messaging.