ReaderGPT is a Chrome extension that leverages ChatGPT to summarize any readable web page instantly. It parses the main content of a page and sends it to ChatGPT along with a customizable prompt, allowing users to generate summaries in bullet points, specific word counts, translations, simplifications, or captions. Users can choose between using their OpenAI API key or logging in with ChatGPT. This tool helps save time and stay informed by quickly grasping key points from lengthy articles and research.