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Client side annotations in pdf viewer

Hi - I would like to load a pdf document into a web page. Then I would like to allow the user to add an annotation to the document. Then I would like to store that annotation, via ajax, on the web server. Then I would like to 'push' the annotation, via a polled ajax call, out to any other users that have the same pdf open at that time in their browser.

Are there any events I can detect in the web browser object that would allow me to identify the details of a new annotation.

Likewise, are there any Javascript / Jquery based methods by which I can add an annotation to a pdf document that has already been loaded into the browser?

Thanks, Paul.

Hi Paul,

Thanks for using our products. I think I can better assist you from Aspose.Pdf for .NET perspective for adding and retrieving annotations from PDF documents. Please visit the following link for information on

From Javascript perspective, I am currently not certain about any particular method. In case of any further query, please feel free to contact.