2 ms·

I believe that if you edit the pdf so that the thing you are redacting is no longer in the pdf file, it is safely redacted. Printing a pdf and rescanning a pdf

by bepvte 7y ago

I believe that if you edit the pdf so that the thing you are redacting is no longer in the pdf file, it is safely redacted. Printing a pdf and rescanning a pdf breaks text selection and screen readers, and basically makes it into a fancy PNG.

munk-a 7y ago
There is a bunch of data in PDFs that may have previously been visible but is no longer. I know that there are also fun meta-data attributes embedded on a per-page and per document basis - and also that PDFs can be portfolio documents where such a document will often contain no longer referenced PDFs that became irrelevant to the PDF. The file format is pretty crazy.