Yes, artwork can be automatically scaled to a smaller or larger size.
For example, if you upload an A4 file and choose A5 printing, we can scale it down to size for you.
However when scaling artwork, please be mindful of issues with image quality/pixelation, text size and readability, page margins and borders etc.
Ideally, we recommend uploading artwork at the size you wish it to be printed (i.e. an A4 file for A4 printing, an A5 file for A5 printing etc.).
If your artwork size does not match the chosen paper size, you will need to choose one of the 'Scale artwork' options on the configure page.