It’s self explanatory but here is how it works:
Highlight desired kanji or vocabulary
Search within Kitsun’s Jisho dictionary to create desired flashcard
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Ohhh, this will be super useful, thanks for creating such tool! 
Installed 
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If you installed the extension, you may get a message warning from Chrome since this was private link. I just made it public and should be ok now. Sorry for any inconvenience!
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Looks like this extension died in Chrome last month due to Yellow Lithium violation: " * The item’s primary purpose is installing or launching another app, theme, webpage, or extension". 
If you have downloaded already, it should continue work but I don’t plan to upkeep/circumnavigate. Selection Search works just as well as an alternative and you can add other quick searches too. And if the dictionary overall happens on Kitsun, then there may be native extensions browser/MPV extension that would be far better in the future.
