Submitting Canva files to Ingram Spark

Preflight issues when working with color-illustrated books in Canva and submitting to Ingram Spark I wrote this documentation after hours of frustration when trying to format Canva’s downloaded Print PDF to a PDF/X-1a:2001 compliant format when submitting a children’s book to Ingram Spark. I had all sorts of art box and other errors, and tried …