LightUp is a browser extension that takes your web experience to the next level. Highlight any text, and with a simple prompt, get instant explanations, summaries, analyses, translations, or whatever action you want—delivered right on the page, on the fly.

Unlike many tools out there, LightUp stands out by letting you use your own local LLM. This means better privacy—no data sent to the cloud—and it works offline, even when there's no connectivity. No other tool gives you this level of control and security.

Whether you're tackling dense articles, technical documents, or just exploring, LightUp keeps things smooth and tailored to you. Prompt the LLM however you like to get exactly the results you need, fast. Plus, it's free—just bring your own API key or local LLM. If you don't have either, you can still enjoy free daily use!

With LightUp, you're in charge of your insights, your privacy, and your workflow.