According to AlphaMoat, as of 2026-09, the Chrome extension ContextLens has 63 users (+37% MoM), rated 5 (14 reviews) — ranked #5,014 of 9,324 AI browser extensions, and #389 of 676 in Education & Research.
What is ContextLens
Highlight text on any page and get instant AI explanation, example and context. Free. No API Key. Works on PDFs too. Highlight any text and understand instantly. ContextLens gives you instant AI explanations without ever leaving the page.
HOW IT WORKS: Just highlight any word or phrase → click Explain → understand instantly.
WHAT YOU GET: Meaning — simple, plain English definition Example — real world example Relevance — why it matters in context of what you're reading
PDF SUPPORT: Open any online PDF directly in ContextLens and get context-aware explanations without leaving the page. Perfect for research papers.
PERFECT FOR: → Students reading research papers and textbooks → Researchers dealing with cross-domain jargon → Professionals reading industry reports → Anyone learning something new online
NO FRICTION: → No account needed → No API key required → No copy-pasting → No new tabs → Completely free
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Just highlight → click Explain → understand.
Extension profile
User Growth Trend
Popular in Education & Research
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+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.