Hi Hamdy,
Currently,
ImageSource customization is not available for the SfTabItem. So we have
already logged feature requests for “Customization of TabHeader Image Source”
and it can be tracked through our feedback portal below
Feedback link: https://www.syncfusion.com/feedback/7405/customization-of-tabheader-image-source
Please upvote this feature to make this our priority. While this
feature itself is important we will prioritize the features every release, based
on the user demands. So, this feature will be available in any of our upcoming
releases.
If you have any more specifications/suggestions to the feature
request, you can add them as a comment in the portal.
Regards,
Ruba Shanmugam