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

Debug PDF files

The first JPedal release of 2023 has just been published and with it, some exciting new features have been added to our Java PDF...
Jacob Collins
47 sec read

How to make a PDF file manually

PDF Files are very complex files and we always recommend you use a library such as JPedal when working with them. But it is...
Mark Stephens
59 sec read

How to edit PDF files using Incremental Updates

Yesterday, Mark wrote about how wrong references tables can be. He’s also previously written about how to edit PDF files by adding a second...
Sam Howard
1 min read

Where do your PDF objects start in a PDF…

In theory this is a really easy question to answer for non-Compressed PDF files. There is a reference table to all the PDF objects...
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
44 sec read