WordLens

Select any word to get a context-aware definition powered by AI. Uses the page content to give you the right meaning.

WordLens gives you instant, context-aware definitions for any word or phrase on the web — not just a dictionary lookup, but an AI explanation that actually understands what the page is about. HOW IT WORKS Select any text → press Alt+D (or right-click → "Define with WordLens") → a tooltip appears with an explanation tailored to the context of the page you're reading. Example: "model" on a machine learning blog gets a different explanation than "model" on a fashion website. WordLens reads the page first, then explains. SUPPORTS 5 AI PROVIDERS — YOU CHOOSE - Google Gemini — Free, 1,000 requests/day, no credit card needed - Cohere — Free, 1,000 requests/month, no credit card needed - DeepSeek — Very affordable, ~$0.14 per million tokens - OpenAI — Pay-as-you-go, powered by GPT-4o mini - Anthropic — Pay-as-you-go, powered by Claude Haiku FEATURES - Context-aware definitions using the actual page content - Keyboard shortcut (Alt+D) for instant one-handed lookup - Right-click context menu support - Clean dark tooltip with smooth animations - First-time onboarding walkthrough to help you get started - Remembers your provider and key — set up once, works forever - Works on all websites PRIVACY FIRST Your API key is stored only in Chrome's local storage on your device. All API calls go directly from your browser to the AI provider — WordLens has no server, no backend, and collects absolutely no data. Full privacy policy available in the extension. GETTING STARTED 1. Install the extension 2. Pick a free provider (Gemini or Cohere recommended) 3. Get a free API key from their website (links provided in onboarding) 4. Paste it into the extension popup 5. Select any word anywhere and press Alt+D