Credits
Leveling Tower uses several high-quality open-source databases to provide accurate information on kanji, vocabulary, example sentences and Japanese grammar. This page credits each source as required by its licence.
KANJIDIC2
A comprehensive database of over 13,000 kanji with meanings, readings and detailed information.
Electronic Dictionary Research and Development Group
License: Creative Commons Attribution-ShareAlike 4.0.
JMdict
A Japanese-English dictionary of over 190,000 entries, used for vocabulary.
Electronic Dictionary Research and Development Group
License: Creative Commons Attribution-ShareAlike 4.0.
Tatoeba
A collaborative database of example sentences with translations, used for Japanese example sentences.
License: Creative Commons Attribution 2.0 France. Individual sentences are contributed by the Tatoeba community.
KanjiVG
Vector stroke-order diagrams for over 11,000 kanji.
KanjiVG Project by Ulrich Apel
License: Creative Commons Attribution-ShareAlike 3.0.
Hanzi Writer Data JP
Japanese stroke data for the animated stroke-order mode, derived from the AnimCJK project (François Mizessyn) and the Make Me a Hanzi project, themselves based on the Arphic PL KaitiM GB and Arphic PL UKai fonts.
License: Arphic Public License and GNU Lesser General Public License v3 or later.
License texts: COPYING.txt, ARPHICPL.TXT, LGPL.txt
VOICEVOX
Text-to-speech synthesis used for kana pronunciation audio, voiced by VOICEVOX:四国めたん (Shikoku Metan) and VOICEVOX:雀松朱司 (Wakamatsu Akashi).
Credit required per each character's terms of use.
Kanjium
Community-maintained pitch accent dataset (Tokyo/NHK standard notation) used for vocabulary pitch accent patterns. Coverage is partial: words absent from Kanjium do not display a pitch accent pattern.
CC BY-SA 4.0.