How big can I print a 12 megapixel photo?
Megapixels alone do not specify width and height. This guide uses a 4,000 × 3,000 pixel, 4:3 photo containing exactly 12 million pixels.
Read the guideThe print desk
A little knowledge.
A better print.
Clear answers about pixels, paper sizes and print files. Start with the numbers, then make a considered choice for your image.
Check your image in the print-size calculator →300 DPI vs 600 DPI: which one do you need?
Doubling the density doubles each pixel edge and roughly quadruples the pixel count. The visible benefit depends on what you print.
Read the guideWhat resolution do I need for an A1 poster?
A1 is 59.4 × 84.1 cm. Start with the finished paper size, then choose the image density your printer needs.
Read the guideWhat resolution do I need for an A2 poster?
Use A2's 42.0 × 59.4 cm dimensions to turn a print-shop resolution request into an exact pixel target.
Read the guideWhat resolution do I need for an A3 poster?
A3 is 29.7 × 42.0 cm: a useful size for artwork, smaller posters and photographic prints viewed up close.
Read the guideWhat DPI do I need for printing?
Choose a print density by the image, viewing distance and printer's instructions, then calculate the pixels needed at the final size.
Read the guideWhy do print shops ask for TIFF?
TIFF gives print workflows a widely supported raster container. Its quality depends on the image data, compression and settings inside it.
Read the guideWhy does my print look blurry when the photo looks sharp on screen?
A screen often shows a reduced preview. A large print spreads the original pixels across a much bigger physical area.
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