Svelte Shield 拡張機能 is a tool designed to make it easier to read various Japanese texts without the need for eye movement. It is an extension version of the open-source speed reading tool, Svelte Shield.

After selecting a Japanese text, users can execute it by right-clicking and choosing "Read with Svelte Shield." The tool aims to provide a smooth and seamless reading experience.

Some of the notable updates include the addition of a color theme, allowing users to customize the overall appearance with softer colors. Users can also adjust the maximum number of characters displayed at once by modifying the connected character limit setting.

Furthermore, the extension supports a voice reading mode, which can be toggled using the second icon from the bottom left. Users can also switch between different modes, such as sunny, cloudy, and night, using the icons located at the bottom left.

To enhance usability, a button has been added in the top left corner, allowing users to switch between Svelte Shield and the original screen while keeping both visible.

Overall, Svelte Shield 拡張機能 is a useful extension for those who want to read Japanese texts effortlessly and efficiently. It offers various features to enhance the reading experience and is freely available on the Chrome platform.