application for compare two pdf content

[grey]

does anyone suggest me how to write a windows application for comparing two
pdf content. The requirement is very easy... i only need to inform user two
pdf are differnet, no need to spot where the difference.

 

[Marc Gravell]

I'm assuming a byte-by-byte file compare won't suffice? In which case
perhaps just extract the text -(something like PDF2TXT / PdfGrabber
[google hits, NOT a recommendation]) and compare that.

Note that the same document could be expressed in very different
markup, so it might not be trivial. Also note that if the copy is in
images you could have problems, especially if those images are not raw
bitmaps, as it could be very hard to spot real changes.

Marc

 

[semkaa]

md5 hash calculating and comparison for 2 files isn`t right way?

 

[Rad [Visual C# MVP]]

does anyone suggest me how to write a windows application for comparing two
pdf content. The requirement is very easy... i only need to inform user two
pdf are differnet, no need to spot where the difference.

Why don't you do a MD5 has of both files and then compare that?