日英自動翻訳 (Automatic Translation between Japanese and English) is a free Chrome add-on developed by jojonki. This add-on allows users to translate text between Japanese and English using either Google Translate or Deepl.

By simply right-clicking on selected text while browsing a webpage, users can access a link to the translation page. They have the option to choose between Google Translate and Deepl for the translation. If the selected text is in Japanese, the add-on will translate it into English, and if the selected text is in English, it will attempt to translate it into Japanese.

The add-on also supports keyboard shortcuts starting from version 1.2. Users can customize the shortcuts by going to chrome://extensions/shortcuts.

Ctrl+Shift+G: Translate selected text using Google Translate

Ctrl+Shift+D: Translate selected text using Deepl