How to Print a Large Image on Multiple Pages

What you need

• The picture. A JPEG, PNG, HEIC or TIFF, or a page of a PDF. The more pixels it has, the bigger it can print before it looks soft.
• A printer and ordinary paper. A4 or Letter is fine. A3 means fewer seams if your printer takes it.
• A way to split the picture. On a Mac that means an app, because the built-in print dialogs can only shrink a picture onto one page. The options are below.
• Scissors or a craft knife, a ruler, and glue stick or tape for putting it together.

Step 1: Decide the finished size

Start from where the print will go, not from the paper. Measure the wall, board or table and pick a width. Then check the picture can take it: divide its width in pixels by the finished width in inches.

A phone photo is usually 4000 px or more across, so a poster about 70 cm wide is realistic. If your picture came from a website or a messaging app, it may be only 1000 to 2000 px. Enlarging a small image explains what you can and can’t get away with.

Step 2: Work out how many sheets

Each sheet can only print inside its margins. On A4 with 1 cm margins, that leaves 19 × 27.7 cm per sheet. Neighbouring sheets also share an overlap strip, so each extra sheet adds a little less than a full sheet.

Quick guide for a portrait poster on A4, 1 cm margins and 1 cm overlap:

The picture keeps its own shape inside that area, so one side usually ends up a little shorter. The poster size calculator works out the exact numbers for your picture and paper.

Step 3: Split and print it on a Mac with Page Tiles

This is the job Page Tiles was built for.

1. Open the picture. Drag it onto the Page Tiles window, choose File › Open, or copy it and press ⌘ V. For a PDF, use the arrows to pick the page.
2. Set the size. Under Finished size, choose By sheets and type how many sheets wide and tall, or choose By size and type the width or height in mm, cm or inches. The other side follows the picture, so it never stretches.
3. Choose the paper. Pick A4, A3, Letter or Legal. Leave orientation on Auto: it chooses portrait or landscape, whichever needs fewer sheets and wastes less paper.
4. Set overlap and marks. Pick an overlap (10 mm is the default) and turn on the printed marks you want: cut marks, alignment marks and sheet labels.
5. Check the sheets. Switch from Assembled to Sheets to see each page exactly as it will print. Look at the quality badge too: Good or Sharp means you’re fine.
6. Print. Click Print 9 Sheets… (the number matches your grid). The standard macOS print panel opens. Keep the scale at 100%.

Not sure your printer reaches the edges you set? Use Print Test Seam… first. It prints only A1 and A2, so you can hold them together and check the overlap before printing the rest. You can also Export PDF… and print later, or send the PDF to someone else.

Get Page Tiles on the Mac App Store $2.99 one-time · macOS 12+

Other ways on a Mac

Adobe Acrobat Reader (free). Acrobat’s print dialog has a Poster option under Page Sizing & Handling, with tile scale, overlap, cut marks and labels. It only prints PDFs, so first turn the picture into one: open it in Preview and choose File › Export as PDF. You set the size as a percentage rather than in centimetres, and there’s no picture-quality check.

Preview and Photos. Neither can split a picture across pages. Their print dialogs scale the picture to fit one sheet. You could crop the picture into pieces by hand and print each crop at a matching scale, but getting the pieces to line up is slow and error-prone.

Websites. Several free sites turn an uploaded picture into a tiled PDF. They work, but your picture goes to someone else’s server, and you print their PDF with whatever margins they chose. Check how close your printer prints to the edge first.

On Windows

Paint. Open the picture, go to File › Print › Page setup, and under Scaling choose Fit to with the number of pages across and down. Paint doesn’t add overlap or marks, so leave a margin and trim carefully.

Your printer’s driver. Many HP, Canon, Epson and Brother drivers have a Poster or Tiling layout in Printing Preferences, often with 2 × 2, 3 × 3 and 4 × 4 options. Where it lives varies by model and some drivers don’t have it.

Microsoft Word has no way to split one picture across pages. It prints what fits on a page and cuts the rest off. Use Paint or the driver instead.

Step 4: Put it together

Lay the sheets out in label order: row A across the top, then B, then C. Trim along the cut marks on the edges that overlap a neighbour, line up the alignment marks, and glue or tape from the back. How to assemble a tiled poster has the details, including which edges to cut.