Brand Voice Engine is a Chrome extension designed for Brand Lab members to ensure their writing aligns with brand positioning. This free add-on allows users to highlight text on any web page, whether it's in an email, proposal, or social media post, and receive a detailed Brand Review. The tool provides a four-tier scoring system, inline annotations for improving text, and a breakdown of various elements such as personality and tone. Users can save their reviews for future reference and see how their voice evolves across different platforms.

The extension operates seamlessly by allowing easy access through right-click options or keyboard shortcuts. It docks a side panel that displays a score alongside helpful annotations that guide users on how to adjust their writing. While it does not edit text directly or monitor browsing activity, it offers a refined Co-writer feature for text revision. Overall, Brand Voice Engine enhances the writing process by keeping brand consistency at the forefront.