In an approach for integrating documents a processor extracts a first set of keywords from at least one structured document. A processor generates a first batch of keywords from the first set of keywords, wherein each keyword in the first batch of keywords includes a weight. A processor extracts a second set of keywords from at least one unstructured document. A processor compares the first batch of keywords to the second set of keywords. A processor determines that the at least one unstructured document matches, based on a predetermined threshold, the at least one structured document, based on the comparison of the first batch of keywords to the second set of keywords. A processor removes the at least one unstructured document from a list of unstructured documents which are to be processed.