Printing guide

How to print a large image or PDF on multiple pages

A home printer stops at A4 or Letter, but a picture can be printed across several sheets and joined into a poster. A few programs can do it themselves, most cannot, and the ones that can ask for a grid or a percentage rather than the size you want on the wall. This guide says what each one does, how many sheets common poster sizes take, and how to trim and join them.

By Michael SavvidisReviewed 11 November 2026

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What each program can do

Checked in November 2026 against each maker’s own help pages. “Can” means the program itself splits one page over several sheets.

Program	Splits a page?	Where	Limits, and what to do instead
Adobe Acrobat and Acrobat Reader	Yes, for a PDF	Print, then Poster under Page Sizing & Handling. Tile Scale sets the enlargement in percent, Overlap the shared strip; tick Cut marks and Labels.	On a Mac the Poster option has been reported greyed out in free Reader since macOS Sonoma. The size is a percentage, not a finished size: work it out, or use the splitter.
Paint (Windows 10 and 11)	Yes, for a picture	File, Print, Page setup. Under Scaling choose Fit to and type the grid, for example 2 by 2 page(s).	No overlap and no marks, and the picture is fitted to the grid, not to a size in centimetres or inches. Trim the white margins by eye.
Excel	Yes, for a sheet	Page Layout, the Page Setup launcher, Page tab: under Scaling choose Adjust to and type more than 100%. The sheet then runs over as many pages as it needs.	Page breaks fall where the cells are, with no overlap. Check them in View, Page Break Preview before printing.
Word and PowerPoint	Not by themselves	Neither has a poster option. Export the page as a PDF (File, Save As, PDF) and tile the PDF.	Acrobat’s Poster option, or the splitter with the PDF.
Preview on a Mac	No	Preview offers Scale, Scale to Fit and Fill Entire Paper for one sheet only.	The splitter in Safari or Chrome; it takes PDFs and pictures.
Canva and Google Docs	No	Both hand the page to the browser’s ordinary print dialog, which prints one page on one sheet.	Download the design as PDF (Canva: Share, Download, PDF Print) and tile the PDF.
The printer’s own driver	Some, on Windows	Printer properties, usually a Page Layout tab: Poster, or Tiling/Poster, with a grid such as 2 × 2 or 3 × 3. Canon, Epson and Brother document it.	Only a fixed grid, only if your model has it, and it applies to whatever program prints.
A phone or tablet	No	AirPrint on iOS and the Android print service print a page on one sheet and have no scale or tiling setting.	Make the tiled PDF in the phone’s browser with the splitter, then print that PDF: each of its pages is one sheet.

How many sheets a poster takes

Fewer than the area suggests would be nice; in practice it is more. A printer leaves an unprinted margin, and each sheet needs a strip that overlaps the next so there is something to trim and tape. With a 5 mm margin and a 10 mm overlap, an A4 sheet contributes 190 × 277 mm of new picture, not 210 × 297. These are the counts the splitter gives with those settings, with the sheets turned whichever way needs fewer.

Poster	On A4	On US Letter
A3 (297 × 420 mm)	4 sheets (2 × 2, portrait)	4 sheets (2 × 2, portrait)
A2 (420 × 594 mm)	8 sheets (2 × 4, landscape)	6 sheets (2 × 3, landscape)
A1 (594 × 841 mm)	12 sheets (4 × 3, portrait)	12 sheets (3 × 4, portrait)
A0 (841 × 1189 mm)	21 sheets (3 × 7, landscape)	25 sheets (5 × 5, portrait)
18 × 24 in	8 sheets (2 × 4, landscape)	8 sheets (2 × 4, landscape)
24 × 36 in	15 sheets (3 × 5, landscape)	15 sheets (3 × 5, landscape)

A smaller overlap or a printer that prints closer to the edge can save a row. Type your own margin and overlap into the poster splitter and the count updates before you print anything.

Check the picture is big enough

Enlarging does not add detail. What matters is how many of the picture’s pixels land on each inch of paper, and how far away people stand. For the long side of the poster:

Poster	Sharp up close (150 px per inch)	Fine on a wall (100)	Pixels start to show (70)
A3 (297 × 420 mm)	2,480 px	1,650 px	1,160 px
A2 (420 × 594 mm)	3,510 px	2,340 px	1,640 px
A1 (594 × 841 mm)	4,970 px	3,310 px	2,320 px
A0 (841 × 1189 mm)	7,020 px	4,680 px	3,280 px
18 × 24 in	3,600 px	2,400 px	1,680 px
24 × 36 in	5,400 px	3,600 px	2,520 px

The splitter shows this number for your own picture at the size you chose. A PDF made of text and line drawings has no such limit: it stays sharp at any size, and the splitter keeps it as vectors. A photograph that is too small for the size you want can still make a good poster as halftone dots, which are meant to be seen from a distance.

Print, trim and join

Print every sheet at Actual size or 100%, never Fit to page: Fit shrinks each sheet by a few percent and the picture no longer meets at the joins. See how to print at actual size.
Print the first sheet alone and measure its check line. If it is short, the scale is wrong; fix that before printing the rest.
Lay the sheets out in order. The labels read row and column; work from the top-left.
On each sheet, cut off the white margin on the side that will lie on top of its neighbour, along the cut marks. A steel rule and a knife are straighter than scissors.
Join a whole row first, taping on the back, then the next row. Join the rows to each other last: an error in one sheet then stays in its row and does not grow down the poster.

If part of every sheet is missing at one edge, the printer’s unprintable margin is wider than the file allows for: see why prints get cut off, and raise the margin in the splitter.

Try it with a test poster first

Four sheets of plain paper are cheaper than a failed A1. The test poster below is an A3 page cut the way the splitter cuts a picture: 20 mm squares, two diagonals and a circle 200 mm across run over every join. Once it is taped together, a ruler across a join should read 100 mm between heavy lines, and the circle should close without a step.

Frequently asked questions

How do I print one picture on 4 pages?

In Paint on Windows: File, Print, Page setup, and under Scaling choose Fit to 2 by 2 pages. For a PDF, Acrobat’s Poster option with Tile Scale at about 200%. For a finished size instead of a grid, an A3 poster from A4 or Letter is four sheets in the poster splitter, with an overlap and cut marks.

How do I print a PDF as a poster on several A4 sheets?

In Acrobat or Acrobat Reader choose Print, then Poster, and raise Tile Scale until the preview shows the number of sheets you want; tick Cut marks and Labels. If Poster is greyed out or you want a size in centimetres or inches, open the PDF in the poster splitter, choose the finished size, and download a PDF with one page per sheet.

Why is there a white border on every sheet, and how do I join them?

Most home printers cannot print the last 3 to 5 mm of the paper. Cut that margin off the right and bottom edges of each sheet along the cut marks, lay the sheet over the unprinted overlap of its neighbour, and tape from the back. Join each row first, then the rows to each other.

How big can I print my picture before it looks bad?

Divide the pixels along the long side by the poster’s long side in inches. About 150 pixels per inch looks sharp at arm’s length, 100 is fine on a wall seen from across a room, and below about 70 the pixels show. A 4000-pixel phone photo is 120 pixels per inch on an A1 poster.

Can I do this from a phone?

Not with the phone’s print dialog, which has no tiling. Make the tiled PDF in the phone’s browser with the poster splitter and print that PDF: every page of it is one sheet, already cut to the right part of the picture.