Re: Compare two PDFs

On Fri, Mar 8, 2019 at 10:29 AM Charles Wilt <charles.wilt@xxxxxxxxx> wrote:

Note that in order for this to work, the PDFs must have been created with
embedded text and not graphically!

I recall testing more than one spool file to PDF converter that created
graphical PDFs instead of ones with embedded text.

Easy way to tell, when you open the PDF, can you successfully search for
text.

Not always. There are text PDFs, and raster image PDFs. The raster image
PDFs cannot be searched (well, maybe they can since OCR is getting better).

But PDFs can be created with plain text in view, but also compressed and/or
encrypted where you can see or read the text just using a text editor.
Which is why if you have non-image PDFs and want to compare, look into a
PDF kit already available. They're really powerful and will do the heavy
lifting.