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Is there a way to add sticky notes like "Adobe Acrobat"?

Sticky notes over text document, images etc. Specially I want to comment with balloon on big images. Any solution must be no-cost.

Adobe Acrobat document comment tool

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Online: PDFescape can do this

Offline: I'm fairly sure PDF X-Change Viewer has this functionality (though I can't test that right now)

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I tried PDF X-Change Viewer. It doesn't work well with images. when I add images it shows at only 50% zoom – metal gear solid Jan 28 '11 at 4:09

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