Upload your print-ready postcard PDF and instantly check its trim size, bleed, aspect ratio, and USPS mail class — before it goes to the printer. Nothing is uploaded; it all runs in your browser.
Drop your postcard PDF here
or click to choose a file · PDF up to 30 MB
Your file is read in your browser and never uploaded to a server.
Catch costly print & mailing mistakes early
The most expensive direct-mail errors are the ones you don’t see until the cards come back from the printer or the post office: a trim size that quietly bumped you from the postcard rate to the letter rate, a missing bleed that left a white sliver on the edge, or an aspect ratio that triggers a per-piece surcharge. This preflight reads your PDF’s own page geometry and checks those in seconds.
Think of it as a fast first pass. The automatic checks — trim size, mail class, bleed, and aspect ratio — are read straight from the file. The items marked “review” (image resolution, safe margins, and the barcode clear zone) depend on the artwork itself, so we point you to exactly what to double-check instead of pretending a PDF alone can prove full USPS compliance.
Is my PDF uploaded anywhere?
No. The preflight reads your PDF directly in your browser using JavaScript. The file never leaves your computer and is not sent to or stored on any server.
What does the preflight check automatically?
It reads the PDF’s page geometry: the trim (final cut) size, whether a bleed area is set up, and the aspect ratio — then maps the trim size to a USPS mail class (retail postcard, letter, or oversized) and flags the non-machinable surcharge risk.
Why are some items marked "review" instead of pass/fail?
A PDF’s page boxes reliably tell us size and bleed, but things like image resolution, safe margins, and the barcode clear zone depend on the artwork content and your chosen layout. We flag those for a quick manual check rather than giving you a false "pass." Automated image-DPI checking is on the roadmap.
My postcard is front and back — which page is checked?
This report covers page 1. If your PDF has multiple pages (e.g. front and back), check each page. Both sides must meet the size rules, and the address side must keep the barcode clear zone open.