In this talk, we're excited to show you how we built ScaleDown, a Chrome extension that makes your AI interactions more efficient and environmentally sustainable using prompt compression! As more people use AI tools such as ChatGPT, Claude, and Gemini instead of Google Search, few realize the massive carbon footprint each interaction generates. We will talk about our journey from recognizing this hidden environmental cost to creating a solution that is helping users reduce their AI-related emissions by up to 80%. Finally, we'll share how developers can contribute to our open-source Python package powering ScaleDown's prompt compression. Whether you're interested in improving our compression algorithms, enhancing our emissions calculation methodology, or expanding compatibility with additional AI models, we'll show you how you can get involved!