Gemini Chat Sidebar is an AI-powered assistant embedded in your Chrome browser, similar to Microsoft Edge's Copilot. It allows users to engage in free-form conversations with Gemini, analyze webpage content with a single click, and get intelligent responses for page summarization and analysis. The tool supports continuous dialogue, enabling more in-depth and productive interactions. Gemini Chat Sidebar is ideal for users seeking AI assistance while browsing, making web navigation more efficient and insightful.