Abstract: Systems and methods for eliminating duplicate document information and document images prior to or after coding, rekeying, using optical character recognition, searching or producing the documents. Multiple documents are identified to determine whether or not they are duplicate documents. Corresponding sample areas or points of the documents are identified and the corresponding pixels of the sample areas or points are compared to determine whether or not the pixels are identical. If no match occurs, it is determined that the documents are not identical. However, if the pixels in the corresponding sample areas or points match, a more detailed sampling process and a more complex comparison technique is utilized to confirm whether or not the documents are in fact duplicate copies. Documents that are determined to be non-duplicates may undergo a coding process or other process as required by the user.