Create Read-only report / dashboard

Hello,

I would like to create specifics "end user reports" for people that has never seen Enterprise Manager and how it works, they just want to know for example how big was their schemas for the last 3 months (such report already exists, but they can not build them)

is there a way to create basic html report or pdf reports based on existing metrics on each agent ?

by "Basic", i mean reports with no links to other HTML pages.

In other words, in there an other way for me than querying the OMR for each monitored server and formatting the datas in an HTML format, using php for example.