TOPIC:

i want to attach my digitally signed image(.png obviously) so is this possible if yes then how plz reply..

i think it's possible, but not in current time.
but after form edit supporting

to take a graphical sign you should adopt HWriting class in the pdf package.

Look at there: www.androidpdf.mobi/javadocs/com/radaee/pdf/HWriting.html

You can have a try of omissis.

Kukuyiyi, pay attention: your reply is off topic.

Here we speak about pdfviewer SDK and its ability to put bitmap on PDF, we should accept posts about other mobile and, first of all, Android solution that would give other users usefull and in topic information.

You've just registered here to promote a PC solution that convert PDF to bitmap.
Next time we would ban you account.