Hi,
no, there is no library for PDF.
But, depending on the OS, the LibreOffice must be installed and LibreOffice Calc (similar to Excel) is used for creating reports.
The main issue with reports is that LO must be closed, not open, when Jam App runs a report.
So when doing report stuff, open it, change the file, save it into the reports folder, and close LO completely.
To use graphs with reports, pls see this:
The report template is there for download, and the code which displays top 10 customers.
That thread touches on some restrictions with using graphics, ie. charts.
D.