Make a poster from a photo and print it on ordinary paper at home.
Your image is processed entirely on your device. Nothing is uploaded to a server.
Upload a picture, choose how many sheets wide you want it, and we split it into numbered pages that fit your home printer. Print them, trim the margins, and assemble a wall-size poster — no print shop, no special printer, no account.
Everything you need to plan, prepare and print a large poster at home.
Enlarge small photos with sharper detail before turning them into large posters.
Resize and crop images to exact pixel or print dimensions.
Work out how many sheets you need for any wall or standard poster size.
Turn a favourite photo into stylish, framable wall art.
Ready-made layouts for parties, classrooms and events.
Paper, printer settings and assembly tricks for a clean result.
A tiled poster is one large image divided into a grid of regular-sized pages. Each page holds one piece of the picture, so a normal inkjet or laser printer can produce a print far larger than any single sheet it accepts. Lay the pages out in order and the full image appears — 60 cm, 1 m or even 2 m across.
The technique is often called tiled printing or poster printing, and it was popularised online by a tool named the Rasterbator. Image to Poster does the same job in a modern browser: no installation, no Flash, and no upload of your private photos.
A print shop sells you one seamless sheet. A tiled poster costs only paper and ink you already own and is ready in minutes. Thin seams between pages are visible up close, but from a few steps back the image reads as a single piece — which is why the method is popular for classrooms, dorm rooms, parties and murals.
Halftone is the classic dot pattern of newspapers and pop art: dark areas become large dots, light areas small ones. Rendering a giant poster as halftone hides low resolution and gives a striking graphic look. Choose classic black-and-white or colour halftone with round, square or diamond dots — or keep the original photo untouched.
There is no hard limit — you choose how many pages across, and the number of rows follows your photo's shape. Twenty A4 pages wide is almost four metres. In practice, sharpness depends on your source image, so the tool shows the effective print resolution as you resize.
From photo to wall poster in three steps.
Drag an image onto the tool or click to choose a JPG, PNG or WebP file. It is read directly by your browser and never leaves your device.
Pick A4, US Letter or A3, portrait or landscape, and set how many pages wide the poster should be. Keep the photo as is or turn it into a halftone dot poster — the live preview shows the exact grid, effect and final dimensions.
Download a multi-page PDF (or a ZIP of JPG pages), print every page at 100% scale, trim along the crop marks and assemble the sheets by the row and column label printed on each one.
No watermark, no page limit, no trial. The whole tool is free to use as often as you like.
All processing happens in your browser. Your photos are never uploaded, stored or seen by anyone else.
Open the page and start. There is no account, email or app to install.
Every sheet has a printer-safe margin, crop marks for straight trimming, a row/column label and a mini map showing exactly where it goes.
See the exact sheet grid, the final poster size in centimetres and inches, and a sharpness warning before you print a single page.
Desktop, laptop, tablet or phone — large photos are rendered page by page so even mobile browsers stay responsive.
A few minutes of preparation makes the difference between a wavy collage and a clean, gallery-style wall piece.
Bigger posters need more pixels. A modern phone photo of 12 megapixels prints sharply up to roughly 3–4 A4 pages wide; beyond that it still looks good from a distance. Images with strong shapes and contrast — portraits, skylines, album art — scale better than busy, detailed scenes.
Avoid screenshots and images saved from social media where possible: they are heavily compressed and show blocky artefacts when enlarged.
A4 is standard in most of the world; US Letter in the United States, Canada and parts of Latin America. If your printer takes A3, you need fewer sheets and get fewer seams.
Start with the width you want on the wall. Each A4 page in portrait adds about 19 cm of width, each landscape page about 27.7 cm. Watch the sharpness figure: above 150 DPI looks crisp up close, 100–150 DPI is good for a wall, and below 100 DPI is best viewed from across the room.
In your printer dialog choose “Actual size” or “100%”. Do not choose “Fit to page”, “Shrink” or “Borderless” — these resize each page slightly differently and the pieces will no longer line up.
Use the same paper and print quality for every page so colours match. Plain 80–100 g/m² paper works; slightly heavier matte paper looks more premium and wrinkles less when glued.
Every page has small crop marks in its white margin. Line a metal ruler up with two opposite marks and cut with a craft knife, or use a paper trimmer, to remove the margin exactly where the image starts. Trim the edges that meet a neighbouring sheet; outer edges of the poster can keep their margin or be trimmed for a borderless look.
Each sheet is labelled R(row)C(column) in its top margin, with a tiny map of the whole grid. Start with R1C1 in the top-left corner and work across each row. Tape the backs together with low-tack tape, or mount the pages directly on the wall, foam board or cardboard with a glue stick or spray adhesive.
Prefer gluing to butting edges? Turn on “Overlap edges”. Each sheet then carries an extra 5 mm strip on its right and bottom, marked by a dashed line. Trim only the top and left of every sheet at the crop marks and lay it onto its neighbour so the cut edge sits on that dashed line — small trimming errors disappear under the overlap.
Removable poster strips or putty keep walls undamaged. For a longer-lasting piece, mount the assembled poster on foam board first. Step back a few metres — the seams disappear and the image takes over the wall.
Finished poster size for common grids, using the printable area of each sheet (10 mm margin on every side, portrait orientation).
| Paper | Grid | Sheets | Finished size |
|---|---|---|---|
| A4 | 2 × 2 | 4 | 38 × 55 cm (15.0 × 21.8 in) |
| A4 | 3 × 3 | 9 | 57 × 83 cm (22.4 × 32.7 in) |
| A4 | 4 × 4 | 16 | 76 × 111 cm (29.9 × 43.6 in) |
| A4 | 5 × 5 | 25 | 95 × 139 cm (37.4 × 54.5 in) |
| US Letter | 2 × 2 | 4 | 39 × 52 cm (15.4 × 20.4 in) |
| US Letter | 3 × 3 | 9 | 59 × 78 cm (23.1 × 30.6 in) |
| US Letter | 4 × 4 | 16 | 78 × 104 cm (30.9 × 40.9 in) |
| US Letter | 5 × 5 | 25 | 98 × 130 cm (38.6 × 51.1 in) |
| A3 | 2 × 2 | 4 | 55 × 80 cm (21.8 × 31.5 in) |
| A3 | 3 × 3 | 9 | 83 × 120 cm (32.7 × 47.2 in) |
| A3 | 4 × 4 | 16 | 111 × 160 cm (43.6 × 63.0 in) |
| A3 | 5 × 5 | 25 | 139 × 200 cm (54.5 × 78.7 in) |
Covering a full standard poster on A4 paper takes: A0 25 sheets, A1 15 sheets, A2 8 sheets.
Yes. There is no charge, no watermark and no limit on the number of posters or pages. The site is supported by unobtrusive advertising.
No. Your image is opened and cut into pages entirely inside your browser using JavaScript. It never leaves your device, so it stays completely private.
Always print at 100% or “Actual size”. Do not use “Fit to page”, “Shrink to fit” or borderless printing, because those options rescale each page and the pieces will not line up when you assemble the poster.
Every sheet is printed with a row/column label such as R2C3 — row 2, column 3 — plus a small map of the whole grid with its own position highlighted. Start with R1C1 in the top-left corner and work across each row.
Halftone redraws your photo as a grid of dots — big dots in dark areas, small dots in light areas — like newspaper print or pop art. Choose black-and-white or colour, round, square or diamond dots, and the dot spacing. Because the eye blends the dots from a distance, halftone also hides low image resolution, which makes it ideal for very large posters.
Your photo's proportions rarely divide into a whole number of sheets, so in “Fit whole photo” mode the last row is only partly used. Switch to “Fill all pages” to enlarge the image until it covers every sheet — a little is trimmed evenly from the edges — or try the other paper orientation.
Up to 20 pages wide; the number of rows is calculated from your photo's aspect ratio. The tool shows the finished size in centimetres and inches plus the effective print resolution so you can judge sharpness before printing.
Aim for at least 100 DPI at the final size for viewing at arm's length, and 150 DPI or more for close-up detail. As a rule of thumb, a 12-megapixel photo looks sharp up to about 3–4 A4 pages wide.
A4, US Letter and A3, in portrait or landscape. Choose the size your printer is loaded with; A3 needs fewer sheets for the same poster size.
Most home printers cannot print to the very edge of the paper. The 10 mm margin guarantees nothing is cut off, and it holds the crop marks, page label and position map. You trim it away along the crop marks before assembling.
Yes. The tool runs in modern mobile browsers including Safari on iPhone and Chrome on Android. Pages are rendered one at a time, so even large photos do not crash the browser.
A multi-page PDF by default: one page per sheet, sized exactly to your paper, so printing at “Actual size” is a true 1:1 print. You can also choose a ZIP of high-quality JPG pages, numbered in print order.
It adds a 5 mm strip of extra image on the right and bottom of each sheet, marked with a dashed line. You trim only the top and left edges and lay each sheet over its neighbour up to the dashed line, which hides small cutting errors and gives the glue something to hold on to.