Learn hiragana and katakana faster! A web-extension that updates web-pages, replacing phonetic regions with japanese kana. Kanaphone-we is a web-extension wrapper for kanaphone.
Options allow one to decide how frequently kana appear in the document and allow one to show hiragana, katakana or both.
This script is intended as an open-source cross-browser version of easy-kana, an excellent plugin for Chrome.