Any size, any paper
Set a target size in cm or inches and GridPrint splits it across as many pages as needed. Configurable margins and overlap so pages align when you tape them together.
Free forever · No download · No signup
Print large from any printer
Print images at exact size — from a single page to a wall-sized poster split across multiple sheets.
Upload an image, set the exact dimensions you need, and get a print-ready PDF. Single page or multi-page with crop marks and assembly guide. 100% free web app — no premium plan, no hidden costs. No download, no account, works offline.
Three steps to a giant print
01
Drop in your image
Drag & drop, paste from clipboard, or pick a file. PNG, JPG, SVG, WebP — anything works.
02
Set the size you want
Choose your target dimensions in cm or inches. Pick your paper (A4, Letter, A3) and GridPrint figures out the grid.
03
Print & assemble
Download a multi-page PDF with crop marks, overlap guides, and an assembly map. Print at 100%, cut along the marks, and tape it together.
Everything you need to print big
Built-in image effects
Edge detection for tattoo stencils, halftone for screen-print looks, background removal, brightness, contrast, and color tint. No Photoshop needed.
Print-shop quality PDF
Every PDF includes crop marks, registration marks, overlap guides, a scale ruler, gray bar, and an assembly guide with tips. Exclude pages you don't need with one click.
Set an exact real-world size
Need the subject exactly 20 cm, not the whole image? Mark two points, type the real distance between them, and GridPrint scales everything so it prints at that size — even if the photo is tilted or has whitespace around it.
Your images stay on your device
All processing runs in your browser. Images are never uploaded to any server. No account, no sign-up. Optional anonymous analytics you can decline with one click.
One-click presets
Tattoo stencil, B&W poster, halftone art — start with a preset and tweak from there. Save your own settings for next time.
Works without internet
Install as a PWA and use GridPrint anywhere — on a flight, at a workshop, wherever. All features work offline after first load.
What people print
Wall-sized posters
Turn any photo or artwork into a poster that covers an entire wall. Print across A4 or Letter pages and assemble at home.
Tattoo stencils
Convert designs to stencils with edge detection and print at exact body-placement size for transfer paper.
Classroom & office displays
Banners, bulletin boards, and presentation posters from any office printer. No print shop, no waiting.
Craft patterns & templates
Sewing patterns, woodworking templates, cosplay armor pieces — print full-scale on regular paper.
RPG & battle maps
Print tabletop RPG maps at exact grid scale. D&D, Pathfinder, and other systems — one-inch squares on your table.
Woodworking templates
Scroll saw patterns, intarsia designs, and furniture templates at full cutting size. Print, tape, and transfer.
Party backdrops & banners
DIY photo booth backdrops, birthday banners, and event signage. Print life-size on regular paper.
Floor plans & blueprints
Print architectural layouts and technical drawings at scale. No plotter needed — tile across standard pages.
Mural stencils
Scale art to wall size and print outlines for tracing. Community murals, school projects, or accent walls.
Exact-size prints
Print any image at precise physical dimensions — 15 cm means 15 cm on paper. No Photoshop, no scaling math.
Why GridPrint
No print shop. No subscription. No catch. Just print.
| GridPrint | Print shop | Other online tools | |
|---|---|---|---|
| Cost | Free forever — no premium plan | $15–50+ per poster | Free tier, then paid plans |
| Privacy | Images never leave your device | You hand over your files | Images uploaded to their servers |
| Speed | PDF ready in seconds | Hours to days | Minutes (with upload) |
| Works offline | Yes | No | No |
| Image effects | Stencil, halftone, edge detection, tint | Limited or extra cost | Rarely included |
| Assembly guide | Included in every PDF | Not applicable | Rarely included |
| Account required | No | Usually | Usually |
Frequently Asked Questions
Everything you need to know about printing with GridPrint.
What is GridPrint?
GridPrint is a free browser tool that takes any image and splits it into tiles you can print on a standard home printer, then assemble into a large poster, stencil, pattern, or sign. You set the exact physical size you want, and GridPrint handles the rest.
How do I get the exact size I need?
Enter your target dimensions in the size panel — for example, 90 x 60 cm for a large poster. GridPrint calculates exactly how many pages are needed and generates a PDF with alignment marks, page numbers, and an assembly guide to help you piece it together.
How do I print a poster across multiple pages?
Upload your image, then either set the finished size you want or how many pages wide it should be. GridPrint automatically splits it into a grid of A4 or Letter tiles — one per sheet — and generates a single PDF. Print every page at 100% scale on your home printer, trim the overlap, and tape or glue the sheets together using the included alignment marks and assembly guide.
Can I print on a regular home printer?
Yes — GridPrint is built for standard home and office printers. Any inkjet or laser printer that handles A4 or Letter paper works; GridPrint splits your design across as many sheets as it needs, so you are never limited by page size. The same goes for stencils and tattoo stencils: print the tiles, line them up with the alignment marks, and assemble the full-size design.
What paper sizes can I use?
GridPrint supports A4, A3, Letter, Legal, and Tabloid paper sizes. You can switch between metric (mm/cm) and imperial (inches) units. The tool automatically calculates how many pages you need based on your target size and chosen paper.
Is GridPrint really free?
Yes, completely free. No hidden fees, no watermarks, no premium tier. GridPrint is a free project built as a community tool.
Are my images uploaded to a server?
No. All image processing happens locally in your browser. Your files never leave your device. There are no accounts, no cloud storage, and no data collection of your images.
What image formats are supported?
GridPrint supports JPEG, PNG, WebP, GIF, BMP, SVG, and TIFF — essentially any format your browser can display. For best results with large prints, use the highest resolution source image you have.
Which format prints best — PNG, JPG, or PDF?
Use PNG for line art, text, logos, and stencils — it is lossless and keeps edges crisp. JPG is fine for photographs and keeps file sizes small. Whatever you upload, GridPrint outputs a print-ready PDF with your pages laid out and marked for assembly. For the sharpest result, always start from the highest-resolution source you have.
What DPI or resolution do I need for a sharp print?
It depends on viewing distance. For things you look at up close — stencils, patterns, fine art — aim for about 300 DPI. For big posters viewed from a few steps away, 150 DPI is plenty. GridPrint warns you if your source image is too low-resolution for the size you have chosen, so you can scale down or pick a sharper file before printing.
Can I use GridPrint offline?
Yes. Once you've loaded the page, GridPrint works entirely offline. It's a Progressive Web App (PWA) that you can install on your device for quick access without an internet connection.
Why do my prints not match the expected size?
Make sure "Fit to page" or "Scale to fit" is turned off in your printer settings. Print at 100% scale (actual size). GridPrint adds crop marks and overlap areas to help you align pages — follow the assembly guide included in the PDF.