Postcard Back

The lined side of the postcard, generated.

A small browser tool for making the back of a postcard — the side with the address lines, the stamp box, and the part you actually write on. Pick a paper format, pick a resolution, hit export. Print it, glue it to the back of your photo, write something, mail it.

Made for postcrossing, mail art, slow letters, and anyone who still believes in stamps.

What it does

• 15 paper formats — A7 through A4, DL, US 3.5×5″ through 6×9″, three squares, and a couple of European sizes.
  
• Four print resolutions — 72, 75, 150, and 300 PPI.
  
• Landscape and portrait orientations, with the info block reflowing from side-by-side to stacked.
• Writing area lined every 3 mm, occupying about 65% of the long side.
  
• A real postage-stamp box (≈ 25 × 34 mm), six postcode squares, and *From / To* address lines.
• Bilingual UI — English and Russian.

How to use

1. Open the page.
2. Pick your paper format, resolution, and orientation.
3. Hit Export PNG. You get a print-ready file at native pixel dimensions — e.g. A6 at 300 PPI = 1240 × 1754 px.

Print it, cut it, glue it to the back of a photo or a piece of card stock. Done.

Built with

HTML, CSS, and a single `<canvas>`. No frameworks, no build step, no tracking. One file, one tab.

Free to use, free to print, free to mail.

License

This application is distributed under the GNU Affero General Public License v3.0 (AGPL-3.0).