The Rasterbator for Windows

What the program does and who made it

The Rasterbator is a free Windows application, written by Matias Arje, that enlarges photographs into rasterized, multi-page images for large-format prints. It converts a single image into a series of pages you print, trim, and assemble to form a poster-sized graphic with an intentionally “pixelated” or artistic look.

Quick start: how to produce a poster

• Open your image in the program and choose the output size (how many sheets across the final piece should be).
• Pick the paper format you’ll print on and any print resolution options.
• Apply any desired visual treatments (halftone styles, dot sizes, or color adjustments).
• Export the result as a multi-page PDF, then print the pages and join them together to recreate the enlarged image on your wall.

File types, layout choices and exported results

Supported inputs include common image formats such as PNG and JPG. The app stitches your settings into a multi-page PDF that’s ready to print. You can control:

• paper size,
• number of pages across the finished mural,
• and output file type (PDF for printing).

Styling and customization options

The Rasterbator offers several visual modes and color options so you can move beyond a straight enlargement:

• various poster effects and dot/shape layouts,
• color theme choices and simple palette adjustments,
• per-page layout variations to create a more fragmented or artistic final look.

These options let you turn a photograph into anything from a faithful oversized print to a stylized collage-like piece.

Practical notes and limitations

There is a small learning curve when you first explore the many settings. The program does not label page order in the exported PDF, so you’ll need to determine assembly sequence yourself after printing — this can be tricky if you’ve used heavy effects or switched color schemes across pages. Take time to do a small test print and mark edges before committing to a full print run.

Final thoughts

If your goal is to make large, printable posters from ordinary images and to experiment with stylized raster effects, The Rasterbator is a solid, free choice. Once you learn how the sizing and effects interact, it’s straightforward to produce striking, large-scale prints. Recommended for hobbyists and creative projects.