[mckmk]

Just to throw in another solution for anyone looking. Abbyy FineReader has a comparison module that is excellent. https://pdf.abbyy.com/how-to/compare-documents/

[fmos]

Second that. This is THE solution for comparing any two PDFs (image or not). I’ve been using it for years almost on a daily basis. Part of its use is certainly derived from the excellent OCR engine it relies on. Also, this runs fully local, which is critical for legal purposes. (edit for context: I still use v14)