EsPlain — Easy Explain

Select text → click the +Explain button → get a quick OpenAI explanation.

Understand any text on the web with AI-powered explanations. ## Short Description (132 chars max) Select text → click 💡 → get AI-powered explanations with context. Features depth control, markdown formatting, and text-to-speech. ## Detailed Description **EsPlain — Easy Explain** helps you understand any text on the web with AI-powered explanations. ### How It Works 1. Select any text on any webpage 2. Click the 💡 lightbulb icon that appears 3. Get an instant AI explanation in a beautiful modal ### Key Features **🎯 Smart Context-Aware Explanations** - Automatically extracts surrounding text for better understanding - Focuses on your selected term while using context for clarity - Works with technical terms, acronyms, concepts, and more **📊 Configurable Explanation Depth** - Quick (~150 words) - Fast, simple explanations - Standard (~300 words) - Balanced detail - In-Depth (~500 words) - Comprehensive coverage - "Explain More" button for 400 additional words with structured formatting **🎨 Beautiful User Interface** - Compact lightbulb icon (non-intrusive) - Modern modal with gradient header and smooth animations - Markdown rendering for deeper explanations (headings, lists, code blocks) - Clean, professional design **🔊 Text-to-Speech (Dual Options)** - Free: Browser's built-in Web Speech API (instant, zero cost) - Premium: High-quality OpenAI TTS voices (cached for efficiency) - Both options with stop/resume controls **⚙️ Fully Configurable** - Choose from multiple OpenAI models (GPT-4o, GPT-4 Turbo, GPT-3.5) - Adjust explanation depth to your needs - Enable/disable extension with one click **💰 Cost-Effective** - Smart context extraction (~400 chars, not entire page) - Configurable depth settings to control API usage - Audio caching for premium TTS (no duplicate API calls) - Character limits to prevent runaway costs ### Privacy & Security - Your OpenAI API key is stored locally in your browser - No data is sent to our servers - Direct communication with OpenAI API - Open source code available on GitHub ### Requirements - OpenAI API key (get one at platform.openai.com) - Active internet connection - Chrome browser (Manifest V3) ### Perfect For - Students learning new concepts - Researchers reading technical papers - Non-native speakers understanding complex text - Anyone curious about unfamiliar terms or phrases - Developers reading documentation --- **Note:** This extension requires an OpenAI API key. API usage costs are paid directly to OpenAI based on your usage. Typical cost per explanation: $0.0001-0.001 depending on depth setting.