Online Preflight with will preflight your print jobs before they go to press to help eliminate costly surprises and errors. The pay-as-you-go service supports single page and multipage PDF, EPS, PS, TIFF, and JPEG files, and it outputs press-ready PDF/X-1a or PDF/X-4 files that remain available for download as long as your account is active.

Rates range from $1.50–$3.33 per page, and they’ll process three pages for free so you can try out the service.