Is Browser Boost - Extra Tools for Chrome safe?

This extension adds browser tools for volume boosting, user-agent switching, right-click control, image saving, and WebRTC blocking.

It increases browser tab volume up to 600%, lets you spoof the user agent, and can re-enable right-click, copying, and text selection on sites that disable them. It also adds context-menu options to save images as JPG, PNG, or WebP and includes a setting to disable WebRTC requests. The store description says it runs locally, has no servers, requires no signup, and collects no user data.