Locus

What it does

Locus is a browser extension that reimagines Ctrl+F with AI. It finds relevant sections on web pages and PDFs using natural language instead of exact keywords. It also offers AI summarization, note cards, and favorites for saving information.

Locus is a browser extension that changes how you search inside web pages and PDFs. Instead of typing exact words, you describe what you are looking for, and it finds the relevant section. The page says it understands your search and immediately finds the relevant section. It also offers AI help to summarize pages or portions, brainstorm research topics, and create note cards for study. You can save information with Locus Favorites and refer back to documents and highlighted answers. The free plan includes Smart Search and AI at no cost, with daily limits on documents and AI actions. The Professional plan removes those limits and adds newer AI models, faster processing, and OpenAI integration. The site lists OpenAI GPT 4o, 4o mini, 3.5, Anthropic Claude 3 Haiku, and Google Gemini 1.5 Flash as available models. It is built for reading long papers, documents, and articles. The page shows feedback from an analyst, a research assistant, and a student. No mobile app is mentioned, only a browser extension. No API or open source license is stated on the page.