QY Translate is a free Chrome add-on developed by jonny.Liu that provides professional domain translation for selected text. With this add-on, users can translate text in various domains such as financial, medical, electronic technology, and mechanical, ensuring more accurate translations.

In addition to the translation feature, QY Translate also offers a collection management system for plug-ins and WeChat small programs. It also provides learning tools like hearing training to enhance language skills.

The add-on offers two modes: professional and minimalist intelligence, allowing users to configure the translation experience according to their requirements. For users working with PDF documents, QY Translate includes a built-in PDF reader for seamless translation.

To access the translation feature, users can use the shortcut "Command + K" on Mac or "Alt + K" on Windows.

Please note that after installing QY Translate, it is recommended to refresh the open page for the add-on to function properly.