Dell is correct re. supported file types. For supported image types see KBA 1964141 - Supported image format in Crystal Reports.
The following may also come in handy:
KBA 1216897 - Can you insert a picture into a report based off a file path?
KBA 1213506 - Resolution of bitmap images viewed in the page-on-demand Web viewers downgraded
KBA 1329630 - Images and charts do not display in .NET webform viewer on IIS
- Ludek
Senior Support Engineer AGS Product Support, Global Support Center Canada
Follow us on Twitter