Drop your PICO‑8 cart images (.p8.png) below to lay them out as
little cartridge cards, then print the A4 sheet and cut along the guides. Everything happens in your
browser; nothing is uploaded.
Type what the ruler actually measured and the cards rescale so a reprint is exact (some printers shrink the page a few %). Repeat once if it's still off. A CR80 card is 54 × 85 mm, the size of a standard NFC card.