Some websites like Wikipedia don't let me copy and paste the Latex.
I don't know of a plugin that does what you ask, so I made one. Take a look: https://addons.mozilla.org/firefox/addon/latexcopy/
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Sign up to join this communityI don't know of a plugin that does what you ask, so I made one. Take a look: https://addons.mozilla.org/firefox/addon/latexcopy/