LightUp
AI-Powered annotations for every page on the web.
LightUp launched on December 14, 2024 with 20 votes, #794 of 5,365 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
LightUp is a browser extension that keeps you in the zone, unlocks instant explanations, and expands your knowledge—simply by highlighting any text on the web. Summarize, explain, analyze, translate, and even ask follow-up questions for any text you select.
Highlight text on any page for instant AI explanations, summaries, and translations. Free Chrome extension with optional local LLMs so your data stays private. Add to Chrome in one click.
Highlight any text for instant explanations, summaries, and translations. Free Chrome extension with optional local LLMs for privacy and offline use. 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…from boimaginations.com
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LightUp2025 · chromewebstore.google.com · ▲3An AI-powered genius annotations for every text on the web.
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Source: Product Hunt launch ↗
