> As such, when you try to OCR these files, it doesn't see any images and can't convert it.
That isn't true. Acrobat might skip parts of the PDF that it thinks are already text/glyphs, but it's trivial to get around that by either using other OCR software or just printing the PDF to a raster image first. Example: https://filebin.net/qse2e0oaqkl1hjof/ocred.pdf
Still, though, for the purposes of obscuring these from bots/crawlers... a lot better than nothing!
That isn't true. Acrobat might skip parts of the PDF that it thinks are already text/glyphs, but it's trivial to get around that by either using other OCR software or just printing the PDF to a raster image first. Example: https://filebin.net/qse2e0oaqkl1hjof/ocred.pdf
Still, though, for the purposes of obscuring these from bots/crawlers... a lot better than nothing!