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