PDF analyzer and debugger. PDF Vole is a small tool to debug and analyze PDF files. You can open a PDF file and analyze its internal structure and content.
This tool also helped me a lot in understanding how things work inside of PDF files. So if you need a tool to debug PDF files or if you are just interested in learning how things work in the PDF file specification then this tool may be helpful to you.

Status and outlook
At the moment PDF file inspection functionality is quite complete. It is already usable and stable but some functionality is missing. In the future I plan to expand it to have validation features: This will include PDF/A and PDF/X validation as well as a console tool to validate PDF files in batch mode. Another idea is to integrate some kind of debugger to debug PDF painting commands visually.

PDF Vole has the following dependencies to other projects:
1. iText - For parsing the PDF files
2. application-framework - for the application itself and for resource loading
3. jxlayer - for some fancy GUI stuff
4. Bouncycastle - for encryption / signature support

Usage:
To start the tool you need Java 1.6
Launch the tool with

java -jar pdfvole-20090112beta.jar

(Note that the date may change from release to release) In windows you can double click the jar file in explorer if Java is registered correctly to .jar files.

If you get OutOfMemory exceptions when loading big pdf files, increase the VM memory by adding -Xmx512m to the java command.
e.g java -Xmx512m -jar pdfvole-20090112beta.jar

The license of this software is Free, you can free download and free use this pdf software.