Anyone with the original document can eyeball individual pages and confirm that they (or black bars of the right size) appear in the redacted version. Doing tha

Anyone with the original document can eyeball individual pages and confirm that they (or black bars of the right size) appear in the redacted version. Doing that with unpaginated HTML requires you to use and understand some kind of diff tool, and if there are any significant differences (like a whole paragraph that disappeared without a trace), they can be plausibly blamed on 'technical difficulties.'