Split Poster — Free Online Poster Splitting Tool

Split your images into printable A4 pages. Create large posters, banners, and wall art using your home printer.

What Is Split Poster?

Split Poster is a free, browser-based tool that transforms large images into multiple printable A4 pages. Whether you need to create a large event banner, a classroom display, a piece of wall art, or slides for an Instagram carousel, Split Poster makes it easy — and completely free.

Unlike other tools, your images never leave your device. All processing happens locally in your web browser using advanced JavaScript technology. This means your photos and designs remain private and secure at all times.

Key Features

  • 100% Free — No account, no subscription, no hidden fees
  • Privacy-First — Images are processed locally and never uploaded to any server
  • Instant Preview — See exactly how your poster will be split before downloading
  • Flexible Grid — Choose any combination of rows and columns (1 to 10 each)
  • PDF and PNG Downloads — PDF with print margins, or PNG without margins for borderless tiling and social media
  • Works Everywhere — Desktop, tablet, and mobile devices
  • Multi-Language — Available in English, Spanish, and Portuguese

How to Use Split Poster

Creating a split poster takes just a few simple steps:

  1. Upload your image — Drag and drop or click to browse. We support JPG, PNG, WEBP formats up to 10MB.
  2. Set your grid — Choose how many rows and columns you want. A 2×2 grid creates 4 pages, a 3×3 creates 9 pages, and so on.
  3. Preview the result — See a live preview of how your image will be divided before downloading.
  4. Download your files — Choose PDF (with print margins for easy assembly) or PNG (borderless, perfect for Instagram carousels and edge-to-edge tiling).
  5. Print and assemble — Print each page on A4 paper at 100% scale, then tape or glue the pages together to create your poster.

Popular Use Cases

Large Poster Printing

Turn any image into a large wall poster using your regular home printer. Perfect for event decorations, birthday banners, wedding signs, and promotional displays. A 3×3 grid on A4 paper creates a poster roughly 63×89 cm (25×35 inches).

Instagram Carousels

Create seamless Instagram carousel posts by splitting a wide panoramic image into multiple slides. Set rows to 1 and columns to the number of slides you want. Download as PNG for borderless images that swipe together beautifully on Instagram.

Classroom Displays

Teachers can create custom educational posters, bulletin board displays, and science fair boards using their school printer. Create large periodic tables, solar system diagrams, world maps, and more — all for free.

DIY Wall Art

Professional poster printing can cost $30-$100+. With Split Poster, create the same dramatic wall art for under $3 in paper and ink. Mount on foam board for a professional finish, or hang individual panels for a modern gallery-style display.

Business and Events

Small businesses can create trade show banners, office decorations, and promotional materials without expensive large-format printing services.

Example Result

Here's an example of how a single image looks when split into a 2×2 grid of printable A4 pages. Each page contains a portion of the original image, ready to be printed and assembled into a complete poster.

Example of a poster split into 4 printable A4 pages using Split Poster

Frequently Asked Questions

What image formats are supported?

Split Poster supports JPG, PNG, WEBP and other common image formats. The maximum file size is 10MB. Most modern smartphone photos and digital images work perfectly.

Is my image stored on your servers?

No. Your images are processed entirely in your web browser using client-side JavaScript. We do not store, upload, or have access to your images at any time. Your privacy is guaranteed.

What paper size should I use for printing?

The PDF output is optimized for A4 paper (210 × 297 mm). When printing, make sure to set the scale to 100% (actual size) and do not use "Fit to page" or "Shrink to fit" options, as this will change the size of each piece and prevent proper alignment.

Can I split very large images?

Yes! Split Poster can handle high-resolution images. Very large images may take slightly longer to process depending on your device, but the tool works with any image size within the 10MB file limit.

How do I assemble the printed pages?

Lay out all printed pages on a flat surface in the correct order (left to right, top to bottom). Overlap adjacent pages slightly to align the image across the seam, then tape from the back for a clean front surface. For a professional finish, mount the assembled poster on foam board or cardboard.

What is the difference between PDF and PNG download?

The PDF download includes margins around each image piece, making it easy to print on any printer and assemble with overlapping edges. The PNG download provides borderless image files without any margins — ideal for Instagram carousels, social media posts, and edge-to-edge tiling on borderless printers.

How big can I make my poster?

You can split an image into up to 10×10 grid (100 pages). On A4 paper, a 10×10 grid creates a poster roughly 2.1m × 2.97m (nearly 7 × 10 feet) — large enough to cover most walls.

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