Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems.

PDF file

Where do your PDF objects start in a PDF…

In theory this is a really easy question to answer. There is a reference table to all the PDF objects in the file giving...
Mark Stephens
1 min read

Large images in PDF files (and why I think…

You can embed images in a PDF file as either Vector images or pixel images. This gives you huge power and flexibility, but (as...
Mark Stephens
1 min read

No Startxref found in last 1024 bytes opening file…

A PDF file contains a couple of key pointers. One of them is a pointer to the start of the table which describes the...
Mark Stephens
54 sec read

Understanding the PDF file Format – Multiple trailers on…

A PDF file consists of a ‘dump’ of PDF objects and a reference table defining where they are located in the PDF fille and...
Mark Stephens
1 min read

Customer question – Extracting overlapping clipped images from a…

We had an interesting inquiry about extracting clipped images from a PDF file this week. We already have an example to do this, but...
Mark Stephens
3 min read