Alternative
A free, modern Rasterbator alternative
Upload an image, split it into printable tiles, and assemble a wall-sized poster — no downloads, no uploads, no watermark. Works on any device.
Rasterbator pioneered the print-your-own-poster idea back in the mid-2000s, and still has a loyal following for its signature dot-pattern effect. For regular photo-to-poster printing today, though, its interface and output feel dated, and it has never added modern conveniences like multi-language UI or in-browser processing.
Block Poster is a direct, modern alternative. Upload any JPG, PNG or WebP, choose how many pages your poster should span, and download a print-ready PDF — all inside your browser. Nothing is sent to a server. There is no watermark, no signup, and no file-size limit.
If you love the halftone look Rasterbator is known for, keep it in your toolkit for that specific effect. For everyday block-poster printing — family photos, classroom maps, event banners, sewing patterns — Block Poster is faster and cleaner.
Block Poster vs Rasterbator
| Feature | Block Poster | Rasterbator |
|---|---|---|
| Runs entirely in the browser | Yes | Yes |
| No file size limit | Yes | No |
| Multi-language interface | 7 languages | No |
| Images stay on your device | Yes | No |
| Modern mobile support | Yes | Partial |
| Halftone dot effect | No | Yes |
| Free forever, no watermark | Yes | Yes |
Why choose Block Poster
- 1
Zero uploads, complete privacy
Every image is processed locally in your browser — nothing ever leaves your device. Ideal for family photos, confidential documents, or anything else you would not put on a stranger's server.
- 2
Works in 7 languages
English, Spanish, Portuguese, French, Italian, Dutch and German. Full interface localisation and regional paper sizes, so the tool feels native wherever you are.
- 3
No file size caps
Upload a 200-megapixel image and Block Poster will still split it accurately. There is no server to throttle you, so print-shop-quality source files work out of the box.
- 4
Bundled with calculators and guides
Not just a splitter — also a size calculator, paper size reference, image-to-PDF converter and printing guides. Everything you need for a print, in one place.
Ready to switch?
Upload your image and generate a print-ready PDF in under a minute. Free, no account needed, image stays in your browser.
Open Block PosterRasterbator vs Block Poster — FAQ
Create single-image posters for free, without an account or watermark. Your images stay in your browser.
Not yet. Block Poster focuses on clean, continuous-tone output that matches the source image. For the halftone look, pair Block Poster with a dedicated dithering tool or keep Rasterbator alongside it.
No. Unlike Rasterbator, Block Poster does all image processing locally using the HTML5 Canvas API. Your file never leaves your device.
A4, A3, US Letter, US Legal and Tabloid — with portrait or landscape orientation and a configurable overlap between pages for easier assembly.
Entirely in your browser. Once the page has loaded, splitting the image and assembling the PDF runs locally on your device — your image is never sent to a server.