Want a wall-size poster but only have an A4 or Letter printer? PosteRazor, a free open-source tool, cuts any picture into tiles, saves them as a multipage PDF, and lets you glue the printed sheets together into one big poster.
Image-to-poster workflow
Open a JPG, PNG, BMP, GIF or other common image, and a short wizard walks through paper format, borders, overlap, poster size and saving. Size the poster in centimeters or inches, by a number of pages, or as a percentage of the original image.
Page layout and overlap
Set the paper format and poster dimensions to control how the image is spread across the sheets. An overlap between neighboring pages gives the printed sections shared space for alignment during assembly.
- Choose a page size that matches the paper loaded in the printer.
- Choose which edges overlap, so the extra margin sits where you plan to trim and glue.
Multipage PDF output
After arranging the poster, save the result as a multipage PDF. Each page holds one part of the larger image; print the pages and line them up to assemble the finished poster. This workflow suits enlarging artwork, classroom displays, or signs when printing on individual sheets.
Pros
- Splits raster images into printable pages
- Saves the tiled poster as a multipage PDF
- Includes page size and overlap settings
Cons
- Low-resolution images look blocky at poster size
- No direct printing; save to PDF first
What does PosteRazor create?
A multipage PDF in which each page holds one tile of the poster, ready to print on any standard printer.
Why set an overlap between pages?
The overlap gives each sheet a margin to trim or glue under its neighbor, so the joins line up neatly.
