LightUp

Browser extension that explains and summarizes any highlighted text

Browser extensionfreeglobal

LightUp is a browser extension that gives instant AI-generated explanations, summaries, and translations of any text a user highlights on the web, with support for multiple AI models or a local LLM for full privacy. It's aimed at students, professionals, and researchers who want quick clarity on complex or lengthy text without leaving the page.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of LightUp - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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