Hi Dnyani,
Thank you for your interest in syncfusion products,
Currently we do only support JPEG images in Xamarin.Forms platform, Please find the code snippet to load the images from stream.
Stream imgStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Pdf.Assets.Reporting-Edition.jpg");
//Creating image from Sream using the static function called FromStream
g.DrawImage(PdfImage.FromStream(imgStream), 10, 10, 300, 170);
The sample projects is attached for your reference.
http://www.syncfusion.com/downloads/support/forum/119208/PdfGettingStarted-467152034.zip
Please let us know if you need further assistance.
With Regards,
Praveen