javascript - How does youtube's report bug tool takes a screenshot of you screen? -


if go on bottom of page there's "report bug" link.

they let highlight parts of screen , sent along bug description.

any idea of how implemented?

it uses google's feedback tool, heavy implementation of javascript.

taking @ script, have javascript-ported version of jpg encoder use render user-modified html page image, assume ajax'd on over google when user hits send.


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