ContextLens - AI word & Text Explainer for any Webpage or PDF

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 Just highlight → click Explain → understand.