Search results for: xref

How to 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

PDF inspector now available on JPedal

Today marks a brand new release of JPedal and with it comes some exciting new features including a PDF inspector! JPedal is the best...
Jacob Collins
48 sec read

Adding a PDF file Debugger to JPedal PDF Viewer

Why is a PDF file debugger useful? PDF files are complex and can go wrong in lots of ways. We have been writing JPedal...
Mark Stephens
1 min read

Understanding the PDF File Format

We have been working with PDF files since 1999 and developed complex software to display PDF files. We have learnt a lot about the...
Leon Atherton
4 min read

How to edit PDF files using Incremental Updates

Mark has previously written about how to edit PDF files by adding a second reference table, and Daniel made a whole series on making...
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