In google plus, when you click on the send feedback button located on the bottom-right corner, it enables us to highlight the area where the error has occurred. When we highlight the area and click on submit, the page snapshot is saved for the developers of gplus for the reference to the complain. I want to develop a similar bug tracker using which, i can enable my users to send the snapshot of the page they have faced the error. I want to do that using php as backend.
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You can do this with HTML5 + Canvas + JavaScript.
Google “HTML5 screenshot” 🙂
http://hertzen.com/experiments/jsfeedback/