Profile Context Injector is a Chrome extension designed to enrich user interactions with LLM chat interfaces by integrating tailored profiles. Users can create multiple profiles, such as 'Finance Director' or 'Yoga Professional', allowing for seamless switching during chat sessions. This feature ensures that responses are appropriately aligned with the user's specific tone, goals, and preferences, thereby enhancing communication effectiveness.

The extension boasts a user-friendly profile switcher widget for easy access and offers context and memory injection for each prompt sent, complete with a preview function. Users can manage settings on a per-site basis, enabling or disabling the tool on supported chat platforms. With local-first profile storage, users can maintain privacy and control while utilizing one-click settings to turn off the extension whenever needed.