Guides

Everything on this site comes down to one problem: getting what is on your screen onto paper at the size you actually meant. These are the guides for it.

• Print at actual size Why prints come out the wrong size, the one print-dialog setting that causes it, and how to get an image onto paper at exactly the centimetres you asked for.
• Photos at an exact size Standard photo sizes in centimetres and inches, the pixels each one needs at 300 DPI, and the aspect-ratio mismatch that quietly crops your picture.
• Sewing patterns at 1:1 Why PDF patterns come out the wrong size, the one print-dialog setting that causes it, and how to check the test square with a ruler before you cut.
• Print a poster at home Split a big image across several A4 or Letter sheets, print them at 100%, and assemble a poster that lines up — including how much resolution you actually need.
• How many A4 sheets A2 takes 4 A4 sheets, A1 takes 8 and A0 takes 16 — if you turn the paper the right way round. The full table, plus what overlap and margins add to it.
• Home printer or print shop What each option really costs, where the quality difference actually shows, and the size past which a home printer stops making sense.
• Upscale for printing What AI upscaling actually does to an image, when it rescues a print and when it cannot, and how to work out the print size a given resolution supports.