5 free tools
Scanning and printing, calculated
The arithmetic of getting photographs off paper and back onto walls. Each tool answers one question properly, using the same rules our guides teach.
What DPI should I scan this old photo at?Scan DPI advisorTwo questions in, one number out, with the reasoning. The fastest correct answer on the site.What does a scan at this setting actually produce?Scan output calculatorPrint size and DPI in; pixels, megapixels, file sizes and reprint ceilings out.How big can this image file print?Pixels to print sizeEnter pixel dimensions, get the largest print at three honest quality grades, drawn to scale.Can my small print become a big one?Enlargement calculatorThe print you have plus the scan you plan, against the frame you want to fill.What resolution for slides and negatives?35mm film calculatorFilm is its own arithmetic. Real output per DPI setting, with honest hardware limits.
Quick references
Common print-and-setting combinations, precomputed:
The calculators plan the scan. The app fixes the photo.
Numbers get the detail off the paper safely. Photo Restore then repairs what time did to it: tears, fading, stains and soft faces, in one tap each.
Get Photo Restore freeiPhone and iPad · Three free restorations a day
