1. A system comprising: one or more processors; one or more non-transitory computer-readable mediums operatively coupled to the one or more processors, and having instructions stored thereon, that when executed by the one or more processors cause a computing device to: receive a document image file of a property record comprising one or more images; recognize a document title in the document image file; determine a document type of the property record based on the document title; recognize other data strings in the document image file; identify from the other data strings validation candidate data strings for validation based on the determined document type and a set of rules; search a validation server for target data strings that were extracted from at least one property document that precedes the property record; compare the validation candidate data strings and the target data strings to determine a validation score for each of the validation candidate data strings, wherein each of the validation scores indicates a confidence that a respective validation candidate data string was correctly recognized.