About This Site
Create, preview, and print tiled posters from photos or AI art. BlockPoster.ai is an online block poster maker that turns a photo or AI-generated image into a large poster printed across ordinary sheets of paper. Users can crop an image, choose paper size and poster dimensions, adjust margins and overlap, preview the tiled layout, and download a PDF with assembly guides. Photo uploads and PDF pages are processed locally in the browser. Free PDFs include a watermark and are limited to 150 DPI and five sheets across; paid options provide watermark-free HD downloads and AI image-generation credits.
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Key Features AI
Core Features
Split photos or AI artwork into multi-page poster PDFs
Crop images and customize poster size, paper size, orientation, margins, and overlap
Preview page layouts, finished dimensions, and effective image DPI
Download free PDFs with assembly guides, page numbers, and optional trim guides
Process ordinary image uploads and PDF pages locally in the browser
Generate original artwork with AI using credits
Export watermark-free HD PDFs and batch ZIP files on eligible paid plans
Use five paper sizes: A4, US Letter, A3, US Legal, and Tabloid
Advantages
Free basic PDF downloads are available without signing in
Photo uploads and PDF pages are processed locally in the browser
Supports common paper sizes and flexible poster dimensions
Preview includes page layout, finished size, and effective DPI estimates
Splitting, resizing, cropping, and PDF downloads do not use AI credits
Assembly guides and overlap settings help with printing and alignment
缺点：Free PDFs include a brand watermark and are limited to 150 DPI
缺点：Free posters support up to five sheets across; paid HD plans support up to ten
缺点：AI image generation requires credits and sends prompts or selected references to online providers
缺点：Large images and long PDFs can require substantial device memory
缺点：Printed results depend on the source image, printer, paper, and print settings
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