Dots-per-inch (DPI) is a measure of the number of bytes created per-square-inch when converting paper to digital format through scanning. A page scanned at 200 DPI will create a file that is 2/3 the size of a page scanned at 300 DPI. DPI is a key consideration in controlling the size of scanned files.
Another key consideration is color setting. Dots-per-square-inch become bits in digital format - and the number of bits required per dot, depends on color setting (black and white vs gray-scale vs color). Black and white scanning requires the fewest 'bits' while color scanning requires the most 'bits. This is why a color scan is larger than a black-and-white scan. See this post to see how to calculate the size of a scanned page.
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Another key consideration is color setting. Dots-per-square-inch become bits in digital format - and the number of bits required per dot, depends on color setting (black and white vs gray-scale vs color). Black and white scanning requires the fewest 'bits' while color scanning requires the most 'bits. This is why a color scan is larger than a black-and-white scan. See this post to see how to calculate the size of a scanned page.
Please rate this article
