Postcards are found in three common sizes: 4" x 6", 5" x 7" and 5 1/2" x 8 1/2".

In the digital age of printing, it means that an image file submitted for printing is ready to be transferred to the printing plates without any alterations.

Halftone printing converts a continuous tone (solid areas of black or color) photograph or image into a pattern of different size dots that simulate continuous tone. When examining the page closely, you will see a series of dots spaced slightly apart. At a normal viewing distance, however, the spacing between dots becomes essentially invisible to the eye and what you see is a continuous tone.

The Portable Document Format (PDF) is generally the preferred file format for submitting a document for printing as it works with virtually all professional printing and digital output devices. By design, a PDF file incorporates the information needed to maintain document consistency from system to system. Most other file formats such as Adobe InDesign, Illustrator and Microsoft Word are easily converted to PDF format.