HARPA is an AI-powered browser extension that combines large language models like ChatGPT, Claude, and GPT-4 with web automation capabilities. Here are the key features of HARPA:AI-Assisted Web BrowsingProvides AI-generated answers and summaries for any website, video, or PDF document you're viewingCan extract key information, SEO keywords, and data from web pagesOffers AI-powered search assista..