Poster maker
Or try a sample
Each box is one sheet, labelled as it prints. Shaded strips are the overlap that goes under the next sheet.
Drag the round handles to the two ends of what you marked, then drag the poster where it will hang. It stays on your device, like the picture.
- Finished size
- —
- Sheets
- —
- Sharpness
- —
- Ink
- —
Add a picture to start. Nothing is uploaded.
Before you print
- Choose 100% or Actual size — never Fit to page. Then measure sheet A1: its picture should be wide.
- Print one sheet first to check, then the rest. Same paper for every sheet.
- Cut the left and top edges along the marks, lay each over its neighbour, and glue from behind.
Print an image on multiple pages: a giant poster on A4 or Letter
Add a picture, choose how big it should be on the wall, and download a PDF of numbered sheets for any home printer. Every sheet says where it goes, and nothing leaves your device.
The short answer
To print a large image on multiple pages, add the picture, choose the finished size in sheets, centimetres or inches, pick A4 or Letter, and download the PDF. Print it at 100% (Actual size), cut along the marks, and join the sheets by their labels — A1 top-left, then across and down.
Four steps to the PDF
Step 1: Add a picture
A photo, a drawing or a screenshot. The larger the file, the bigger it can go before it looks soft.
Step 2: Choose the size
Set it in sheets across, or type the width in cm or inches. The badge tells you whether it will look sharp at that size.
Step 3: Download and print
Print the PDF at 100% (Actual size). The first page shows the whole layout; every sheet after it has its label and a small map.
Step 4: Cut and join
Cut the left and top edges along the marks, lay each over its neighbour's overlap strip, and glue from behind.
How to assemble a tiled poster
Every sheet carries its label, which edges to cut, and a small map of the whole poster with its own place filled in. The PDF's first page shows the full layout.
Step 1: Print at 100%
In the print dialog choose Actual size or 100%, never Fit to page, and the same paper you chose here. Print one sheet first and measure it.
Step 2: Lay the sheets out
Rows are letters from the top, columns are numbers from the left: A1 is top-left. Each sheet names its place and shows it on a small map.
Step 3: Trim the marked edges
Cut along the crop marks on the left and top edge of every sheet, except the first column's left and the first row's top.
Step 4: Join and hang
Lay each cut edge over its neighbour's overlap strip, where the picture matches, and glue or tape from behind. Trim the outer margins last.
Sheets across, and how big that is
For a typical 2:3 portrait photo, printed on portrait sheets with 10 mm margins and a 10 mm overlap. Worked out by the same code that makes the PDF.
| Across × down | Sheets | Finished size |
|---|---|---|
| 2 × 3 | 6 | 37 × 56 cm15 × 22 in |
| 3 × 4 | 12 | 55 × 83 cm22 × 32 in |
| 4 × 5 | 20 | 73 × 110 cm29 × 43 in |
| 5 × 6 | 30 | 91 × 137 cm36 × 54 in |
| 6 × 7 | 42 | 109 × 164 cm43 × 64 in |
| 8 × 9 | 72 | 145 × 218 cm57 × 86 in |
| Across × down | Sheets | Finished size |
|---|---|---|
| 2 × 3 | 6 | 38 × 57 cm15 × 23 in |
| 3 × 4 | 12 | 57 × 85 cm22 × 34 in |
| 4 × 5 | 20 | 75 × 113 cm30 × 45 in |
| 5 × 6 | 30 | 94 × 141 cm37 × 55 in |
| 6 × 7 | 42 | 113 × 169 cm44 × 66 in |
| 8 × 9 | 72 | 150 × 225 cm59 × 88 in |
Each extra sheet across adds 18 cm on A4 and 19 cm on Letter — the sheet, less its two margins and the overlap. When the last row would hold only a sliver of picture, the tool offers a slightly smaller size that saves the whole row.
Picture size against poster size
For a sharp poster, aim for at least 100 pixels per inch at the finished size. From two metres away, 50 is fine.
| Picture | Sharp up close (100 ppi) | Fine from 2 m (50 ppi) |
|---|---|---|
| Chat app photo (WhatsApp, Messenger)1,600 px wide | 41 cm (16 in) | 81 cm (32 in) |
| Laptop screenshot1,920 px wide | 49 cm (19 in) | 98 cm (38 in) |
| 12 MP phone photo4,000 px wide | 102 cm (40 in) | 203 cm (80 in) |
| 24 MP camera photo6,000 px wide | 152 cm (60 in) | 305 cm (120 in) |
Why not 300? That is the figure for a photo held in the hand. Nobody reads a poster from 30 cm, and at a metre the eye cannot separate much past 100 pixels per inch.
What people make with it
Dorm and bedroom walls
A 3×3 sheet poster is about 55 cm across — big enough to be the thing people notice, cheap enough to print on campus credits.
Classroom displays
Maps, timelines and diagrams from one image. Use the grayscale option to save the colour cartridge.
Party backdrops
Six sheets across makes a backdrop over a metre wide for a photo corner. Print on thicker paper if you can.
Trace a mural
Print a design at the size of the wall, tape it up, and trace or pounce through it. Turn the halftone style on for a dot guide.
Your picture never leaves your device
The picture is opened, cut into sheets and written into the PDF by your own browser. There is no upload, because there is no server for it to go to — load the page, turn off Wi-Fi, and the poster still gets made. The wall photo for the preview is handled the same way.
- No upload, no account, no email
- No watermark on your poster
- No ads or logos printed in the PDF
- No ads over the preview
- Settings remembered on this device only
Questions people ask
Anything we've missed?
How big can I print my picture?
As big as its pixels allow. For a poster seen from a metre or more, aim for at least 100 pixels per inch at the finished size — a 4000-pixel-wide photo holds about 100 cm across. At 50 pixels per inch it still looks fine from about two metres. The badge next to the size works this out as you change it.
How many sheets do I need?
It depends on the size and the picture's shape. On A4 with 10 mm margins and overlap, each extra sheet across adds about 18 cm. The size guide on this page lists common layouts, and the tool counts the exact sheets before you download.
Why is there a margin and an overlap?
Home printers can't print to the edge of the paper, so every sheet has a blank margin, which you trim. The overlap repeats a strip of picture on neighbouring sheets, so the joins have something to glue onto and a small misalignment never shows white paper.
What printer settings should I use for a poster?
Print at 100% or "Actual size" — never "Fit to page" or "Shrink to fit", which scale every sheet slightly and stop the joins lining up. Choose the same paper size you picked here, and turn off borderless printing. On a Mac this is under Scale in the print dialog; in Windows and in Chrome it is under More settings.
How do I put the sheets together?
Lay them out by label: rows are letters from the top, columns numbers from the left. On each sheet, cut along the crop marks on the edges its label names — the left and top, except on the first column and row. Lay each cut edge over its neighbour's overlap strip, where the picture matches, and glue or tape from behind. Trim the outer margins last. The first page of the PDF shows the whole layout.
Is my picture uploaded?
No. The picture is read, cut into sheets and written into the PDF by your own browser. There is no server it could be sent to — you can load the page, switch off Wi-Fi and it still works.
Can I use it for a PDF or a map?
Not yet — it takes pictures (JPEG, PNG, WebP, GIF, and HEIC in Safari). To tile a PDF today, open it and export the page as a PNG at a high resolution first. PDF input is planned.
Guides worth reading
- Printing
How big can I print my photo? Pixels, PPI and viewing distance
The largest print a photo can make from its pixel width, why a poster needs far fewer pixels per inch than a small print, and why WhatsApp photos print small.
6 min read - Printing
How to print a large poster on A4 paper at home, step by step
Tile any picture across A4 or Letter sheets, print it at the right scale, and join the pages so the seams hardly show. Printer settings, paper, glue, trimming.
7 min read - Printing
What is a rasterbated poster? How halftone dot wall art works
A rasterbated poster rebuilds a photo from dots that grow where it is dark. Why it works from small photos, which dot size to pick, and how to print one.
6 min read
More to print at home
Rasterbator Poster
Redraw any photo as a grid of dots, sized by how dark each part is — the look the Rasterbator made famous — and print it across as many sheets as your wall can take.
Giant Photo Poster
Blow up a favourite photo to a metre or more using ordinary paper and a home printer.
Bingo Card Generator
Unique printable bingo cards as a PDF, from your own words or a theme.
See everything on the Print at home page.