![]() The commandline to achieve this is: qpdf -qdf original.pdf unpacked.pdfĪnother useful and free tool (GPL licensed, but Linux-only AFAIK) to look into PDFs is of course PDFEdit. Jay Birkenbilt's qpdf is a very useful commandline tool (available for Linux, Mac OSX and as source code, under the open source Artistic License), which can unpack most filtered content and re-organize the internal structure in a way that gives you much more insight into it (all objects are numerically ordered, etc.). How to look at the real PDF source behind the 'raw' binary parts ![]() ![]() Because PDFs usually will contain parts which are "filtered" (that means: compressed). You should get yourself a copy of the official PDF reference (download PDF), and you should have read some introductionary article such as this or this to begin with.Įven after such a preparation, you'll not discover much useful when staring at the raw code. Looking at the raw code of PDFs will not serve you much unless you also have an idea about its internal structure.
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