Jisho On The Fly by Lorenzo Cicuttin

Jisho.org is an online Japanese dictionary, Jisho On The Fly makes it accessible directly on the page.

Word definitions

Select some Japanese or English text, then "right click > Jisho On The Fly > Look Up Definition" or on the keyboard "CTRL + SHIFT + Y"

Kanji

Kanji information includes: meanings, readings, JLPT level and strokes order.

Select some text containing one or more kanji, then "right click > Jisho On The Fly > Look Up Kanji" or on the keyboard "CTRL + Y".

Kanji Practice Sheet

Once you have looked up some kanji, you will be able to generate a printable practice sheet based on your history.


Source code: https://github.com/9elt/Jisho