Ninja Lookup Dictionary is a Chrome extension developed by crystalclear506. It is a free program in the Browsers category, specifically under Add-ons & Tools. This extension provides a quick dictionary lookup using definitions from Jisho.org.

With Ninja Lookup Dictionary, users can easily find the definition of any Japanese word directly from any webpage. Additionally, it allows users to look up the definition of English words in Japanese. The definitions are displayed in a small window alongside the current webpage, eliminating the need to open another tab or application to access a dictionary.

This extension utilizes Jisho.org's definition data through its public API, ensuring accurate and reliable information for users. Ninja Lookup Dictionary is a convenient tool for anyone studying or interested in the Japanese language, providing instant access to definitions without interrupting the reading experience.