Locus

Locus is a browser extension designed to transform how users interact with web content by integrating artificial intelligence into the search and research process. Its core function is to replace the traditional “Ctrl+F” (or “Cmd+F” on macOS) with a natural language-powered search engine that understands user intent rather than relying on exact keyword matches. When a user types a query in natural language—such as “the main argument of the third paragraph” or “statistics about climate change in this article”—Locus analyzes the entire page, interprets the meaning, and directly highlights the relevant section. This eliminates the need to guess specific words or phrases, which is a common frustration when scanning long academic papers, dense legal documents, or lengthy reports. For example, a student reading a 50-page PDF can ask “What were the key findings of the 2019 experiment?” and Locus will locate the precise paragraph containing that information, even if the exact phrase “2019 experiment” never appears literally. Beyond basic text search, Locus extends its AI capabilities to PDFs and other long-form content loaded in the browser. It processes PDFs as fully searchable documents, allowing users to skip manual scrolling and instead rely on context-aware queries. This is particularly valuable for researchers, analysts, and students who regularly handle large volumes of material. The extension also includes a personal AI assistant that leverages large language models (LLMs) to synthesize information from multiple sections or even across different pages. Users can ask Locus to summarize a chapter, extract bullet points, compare arguments, or generate a structured output such as a short report, a list of citations, or a mind map. The assistant works within the browser cont