Extend the structure of the site by way of content models, data storage, field types, and navigation, so it is more understandable to users.
PDF Preview Image module provides an image preview from a pdf file and save it on a field image type. It is a light version of Pdf to image field module.
This field provides a mechanism to add subheads and "superheads" -- text above a headline -- to headlines in a semantic and flexible manner.
The Taxonomy term access module provides an API for controlling access to taxonomy terms in a manner similar to the node access system. This module
This module creates a simple file field types that allows you to upload the GIF files and configure the output for this using the Field Formatters.