This looks similar to redline and blackline document comparisons[1]. We do this on our site[2] where we display large financial documents that average 100 pages

This looks similar to redline and blackline document comparisons[1]. We do this on our site[2] where we display large financial documents that average 100 pages. Identifying what text and tables were removed, added and changed from one year to another is useful information for predicting future company earnings[3] [1] https://en.wikipedia.org/wiki/Document_comparison https://en.wikipedia.org/wiki/Document_comparison [2] https://Last10K.com/compare.gif https://Last10K.com/compare.gif [3] https://www.bloomberg.com/opinion/articles/2018-05-22/10-k-company-filings-are-actually-worth-reading https://www.bloomberg.com/opinion/articles/2018-05-22/10-k-c... Update: The site in reference is https://Last10K.com https://Last10K.com