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Get a dedicated desktop app for Block Poster on Mac, Windows, and Linux with WebCatalog Desktop.
- Launch Block Poster directly from your Dock or taskbar.
- Work without distractions in a dedicated window, separate from your browser tabs.
- Manage multiple Block Poster accounts and switch between them without logging out.
For teachers, crafters, event planners, and anyone making large prints at home, Block Poster helps turn an image into a poster that fits together across multiple sheets of ordinary printer paper. It accepts JPG, PNG, and WebP images and processes them in your browser, so the image stays on your device. Choose a paper size—A4, US Letter, A3, Legal, or Tabloid—then set the page grid, orientation, margins, and overlap while previewing the layout. Block Poster creates a multi-page PDF for printing and assembling into classroom displays, event signs, craft patterns, photo walls, or other oversized prints.
Disclaimer: WebCatalog is not affiliated, associated, authorized, endorsed by or in any way officially connected to Block Poster. All product names, logos, and brands are property of their respective owners.
