In a pinch, you can back down from 300dpi but you should strive for at least 300dpi if the ultimate intent is printing. For example, if you want to print something at 6 inches X 6 inches, source your image at at least those measurements and at least 300dpi. This is NOT as good as getting an image already at a higher dpi either but it will probably look- and certainly print- better than the first option.īEST POSSIBLE OPTION (for printing intentions): source the image at highest DPI, ideally at least 300dpi at the largest width & height you'll want to print it. Then take a high resolution picture or scan of the native size version you just printed to basically scan it into your system at a higher resolution than 72dpi.
A so-so option for that: print it without sizing it. If the best you can get is 72dpi, try to get the image at the highest resolution you can get (as LARGE as you can get it). This can actually work OK for some purposes but it's nowhere near a good printing strategy in general. with the computer trying to best guess what image detail should go in those new "pixels" you are creating. Opening a file at 72dpi and then exporting it at something higher (dpi) is basically "creating" pixels. For example, if you grab something that is 400 pixels X 400 pixels at 72dpi and you want to size it up to 1000 pixels X 1000 pixels, it's going to look "jaggie" on screen and even worse than the first example when you print.
Sizing them bigger only makes that worse. Printing it will result in the "jaggies" (rough edges) because printers print at much higher resolution than screen (72dpi) resolution. If I select- say- 600dpi and then create some kind of image on that page, the image I create will be 600dpi when I export it for other uses (like printing it).ħ2dpi is generally considered the LOWEST resolution choice for anything online. For example, if you open a virtual page on which to create an image in Photoshop or Pixelmator or similar, you can select the dpi. Higher resolution images than 72 are created that way or scanned or shot with a camera at high(er) resolution.
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