Tell us where you're printing. We'll prepare the file.
Check your image, fix what can be fixed, and download a file that's ready to print. Your image never leaves your device.
- Free
- Stays on your device
- JPEG · PNG · WebP
Your image
Where are you printing this?
How the check works
Print quality depends on how many pixels cover each inch of paper. We measure that from the real pixels in your image and the size you want. The “DPI” number saved inside a file doesn't change quality, so we never rely on it.
Bigger prints are seen from further away, so a poster needs fewer pixels per inch than a small photo. We also look at how the image was saved and at its colours, and we never stretch your image: if the shape doesn't match, you choose how to crop.
We don't invent pixels. If an image doesn't have enough for the size you picked, we tell you how big it prints well instead.
When your file is ready, we open the finished file again and check it before we call it ready. Printers change their requirements, so where we couldn't confirm a printer's own page, we say so instead of guessing.
Working with a PDF? That's Check Before Submit, which checks page size, fonts, colours and more.
Guides
- How big can I print a phone photo?What print sizes a photo supports depends on its pixels, not the phone. Measured results for 8, 12 and 48 megapixel photos at nine common sizes.
- What file does Printful need for posters and t-shirts?Printful's stated file rules for its poster and t-shirt products, the pixels they work out to, and what our check does with them. Each page is dated.
- What file does Printify need for posters and t-shirts?Printify's stated file rules, the print areas its editor showed for posters and a t-shirt, and what our check does with them. Each reading is dated.