Hey Product Hunt 👋 I made foldcardpdf to scratch my own itch. I make pet sympathy cards on the side, often starting from AI-generated artwork that I refine. The repetitive part was always laying out 4 finished images (front, back, inside-left, inside-right) onto a landscape page in the right fold order, then babysitting my home printer. Two things I'm proud of: 1. It's truly local. Your images literally never leave your machine — no uploads, no account, no telemetry beyond a basic Cloudflare page view. 2. The duplex-drift fix. Most home duplex printers have a small consistent offset between front and back (mine is ~2mm). It's enough to make the inside of a card visibly misaligned. There's an alignment test PDF — print it once, measure the drift in mm, type it back in, and every card PDF you make afterwards compensates. Took my home printer from "unusable for cards" to "perfectly aligned." It's free and stays free. Would love feedback — what's confusing, what's missing, what would you want for your own use case?

FoldCardPDF

Turn 4 images into a print-and-fold card PDF

Turn 4 images into a print-and-fold card PDF