A big poster with a home printer
You choose how wide the poster should be, from 2 to 8 pages across, and the tool works out how many rows are needed to keep the proportions of the image. It also picks the orientation of the sheet, portrait or landscape, that uses fewer pages, and shows the final size of the poster in inches before you download.
The result is a PDF at 200 DPI with one part of the image on each page, ready to print on Letter or A4 paper at home, at school, at the office or at a copy shop.
School projects, classrooms and events
It is the quick way to make a poster for a science fair, a classroom wall, a bulletin board or a school mural without paying for large-format printing. Teachers print maps, timelines, the alphabet or a world map; parents print a birthday banner or a big photo for a party; small shops print a sign or a menu for the window.
Coloring pages and drawings also work well: print a line drawing across six or eight sheets and let a group of children color it together.
Overlap, guides and page numbers
The overlap is a strip that repeats on the edge of the next page, so you have room to glue one sheet over another without leaving a gap. You can choose 0, 5, 10 or 15 mm. Cut guides show where to trim, and page numbers tell you where each sheet goes, which helps a lot once the pages are mixed up on a table.
To assemble it, trim along the guides, lay each page over the previous one on the overlap strip and glue or tape it from the back.
Two things to get right
Print at 100% scale, or "actual size", and turn off "fit to page". If the printer shrinks the pages, the overlap and the guides no longer match. Most printers also leave a small white margin at the edge, which the cut guides help you trim away.
The second point is resolution. A small photo stretched across eight pages will look blurry or blocky up close, because each pixel becomes large. Use the biggest, sharpest version of the image you have. The PDF is built in your browser: the image is not uploaded, and it is free with no sign-up.