Re:Show HN: PDF-Diff - Visualize any differences between two...
by elmimmo on Sunday August 07, 2022 @01:33AM
(#32374148)
Kasyan Servetsky created a script[1] to compare two documents using a similar technique within InDesign, no intermediate export necessary. It overlays one on top of the other using the Difference blend mode. Quite resource intensive, so only useful depending on the particular document and machine you do this with.
[1]: http://kasyan.ho.ua/indesign/all/compare_two_documents.html