Block poster maker.
Small sheets. Big ideas.
Turn one image into a wall-sized poster.
Split it into printable sheets. Make it yours.
Start with an image
Click a sheet to inspect it. Shaded edges show repeated overlap.
Your whole image is preserved. White space may appear when the grid and image shapes differ.
Choose an image or try the sample to create your PDF.
A bigger picture. In three small steps.
No special printer. No special skills. Just an image you love.
Bring your image.
A favorite photo, an illustration, a classroom map. Start with a JPG, PNG or WebP on your device.
Find your perfect fit.
Choose your paper and grid. Check the finished dimensions and inspect any sheet before you print.
Print. Piece. Put it up.
Download one PDF. Print at 100%, trim the margins, match the overlapping edges, and tape the back.
What is a block poster?
A block poster is one large image printed across a grid of ordinary sheets. Trim and join the pages to make wall art, a classroom display, an event sign, or a craft pattern without a wide-format printer. PosterSheet handles the tiling and gives you one PDF in reading order.
Your chosen paper, margins, and overlap determine the finished size. A 3 × 2 grid of portrait A4 sheets with 7 mm margins and 10 mm overlap makes a 56.8 × 55.6 cm poster canvas. The whole image fits inside that canvas, with white space when the proportions differ.
Ready to divide your own picture? Use our free photo splitter to choose a grid and preview every printable page.
Plan it. Print it. Love it.
How big is your big idea?
Standard poster sizes, plus the sheets you’ll need.
A4 or Letter? It matters.
A small difference that changes the way you print.
Get it right, sheet by sheet.
From your first PDF to the final piece of tape.
A few good questions.
Is PosterSheet really free?+
Yes. This tool has no account requirement, payment gate, watermarks, or popups. You can export your poster and assembly guide directly from your browser.
Does my image get uploaded?+
No. Your selected image is decoded and processed locally in your browser. PDF generation also happens on your device. Closing or reloading this page clears the selected image.
Can I print a poster on my regular printer?+
Yes. Choose the paper actually loaded in your printer, download the PDF, and print single-sided at Actual Size or 100%. Do not choose Fit to page: it changes the size of every tile.
Will splitting my photo make it blurry?+
The tool preserves the decoded image pixel dimensions and does not downsample for PDF export. Enlarging a small photo still spreads those pixels over a bigger area. The live DPI estimate helps you judge sharpness; we do not add detail or upscale your photo.
Why are some pages partly white?+
The complete image is fitted without cropping or stretching. A grid with different proportions leaves white space. In automatic size mode, the last row or column can also be only partly filled. Inspect the preview before printing.
How do I join the pages?+
Lay them out in numbered order, left to right and then top to bottom. Trim the white printer margins. Align the repeated image strips using the overlap, and tape the back. The optional final PDF page shows the full assembly map.
Your image stays with you.
PosterSheet processes image files and creates PDFs on your device. We do not receive or store your selected photos. This version uses no analytics scripts, advertising cookies, or accounts. The hosting provider may record ordinary request information such as IP addresses and requested URLs. Only use images you have permission to reproduce. Read our Privacy Policy for the full details.