rikaichan is an extension for Mozilla Firefox that provides a popup Japanese–English/German/French/Russian dictionary. Hover the mouse on top of Japanese words (kanji, hiragana, or katakana) to display the translation. A more detailed kanji view shows the character's meaning, on/kun readings, number of strokes and other information. An adaptation of rikaichan called rikaikun is available as an extension for Google Chrome, and Rikaisama, an extension for Firefox with EPWING Mode that reads Japanese-standard electronic dictionary format EPWING, is available in Kōjien, Daijirin, Kenkyusha dictionaries.