Katana Codex: Japanese Swords

Explore Japan's legendary swords — the Five Greatest plus national-treasure blades — with an interactive tap-to-learn diagram of every part. Built on open data.

Katana Codex is an illustrated guide to Japan's historical swords, built around an interactive part-by-part diagram. It features the "Five Greatest Swords" (Tenka-Goken) such as Mikazuki Munechika and Dojigiri Yasutsuna, along with many blades designated as National Treasures or Important Cultural Properties.

HIGHLIGHTS

• A curated catalog of legendary and nationally designated Japanese swords
• "Anatomy" view: tap the blade to learn each part — kissaki, yokote, hamon, shinogi, mune, hi, monouchi, habaki, machi, nakago, mei, mekugi-ana
• Detail pages with smith, school, era, collection, cultural-property status, dimensions and notes
• Real photographs from museum open data (Wikimedia Commons)
• Browse by designation (National Treasure / Imperial / Important Cultural Property) and search by name, smith or collection

ABOUT THE DATA

Factual data is referenced from Wikidata (CC0) and images from Wikimedia Commons (per-file licenses), with sources credited in-app. Descriptions are original text based on primary sources. Dimensions and dates are reference values from public information.

This app covers only historical swords, smiths and terminology. It contains no copyrighted content from any game or franchise (no characters, names or staging).