About Block Poster
Block Poster is a free online tool that helps you create large wall posters from any image using your regular home printer.
Our Mission
We believe everyone should be able to create beautiful large-format prints without expensive professional printing services or specialized equipment. Block Poster makes it simple: upload an image, configure your grid, and print.
Who Writes Block Poster Guides
Block Poster guides are written and maintained by the Block Poster Editorial Team. We do not claim outside professional credentials that we do not have; our advice comes from building the tool, testing home poster workflows, and documenting the practical choices that affect printed results.
How We Test Our Advice
When we publish printing guidance, we check the workflow inside the browser tool: image upload, grid setup, paper size selection, margin and overlap settings, PDF export, print scale, and page assembly. We update articles when the tool changes or when user feedback reveals a clearer way to explain a step.
Your Privacy Matters
Block Poster processes images entirely in your browser. Your images are never uploaded to any server. With your consent, the site can load Google Analytics, AdSense and Pageview.app for traffic measurement and advertising — see our Privacy page for details. Your uploaded images never leave your device.
How It Works
Block Poster uses modern web technologies including the HTML5 Canvas API for image processing and pdf-lib for PDF generation. Everything runs client-side in your browser, which means your images never leave your device.
Contact
Have questions or feedback? We'd love to hear from you.