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Recommended scanner setting: 300 DPI at 100%

In any event, the long side of the postcard image MUST BE GREATER THAN 800 PIXELS. (It doesn't matter if the postcard is upside-down, vertical or horizontal.)

JPG (JPEG) file compression should be high or medium.  (“High" or "Medium” means not very compressed in case your software uses other words or numbers.  No compression or 100% is fine.)

You can get a rough idea if you have the right image resolution from the file size. The file size would be expected to be in these ranges for a complex multicolored postcard image:

1.2 MB or greater -- No compression

500 KB -- "High" (not very compressed)

250 KB -- "Medium" (more compressed than "High")

A simple monotone (grayscale or black and white, sepia tone, etc.) postcard could have a smaller file size.
 

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Last updated: 02/14/2017 07:01:33 PM -0500
 

Jack Daley, Webmaster

webmaster at postcard.org

Jack Daley, Instructor, City College of San Francisco (CCSF)