Improve Sentence

AI-powered writing improver — select any text on any page to improve it instantly with OpenAI, Claude, Gemini, or Ollama.

Improve Sentence is an AI-powered writing assistant that instantly rewrites any text you select on any webpage — securely and privately. ✦ HOW IT WORKS Set up your API token (right-click the extension icon to access options). Select any text on a webpage. Right-click and choose “Improve Sentence.” View the enhanced version in a clean overlay panel. Click Accept to replace the original text or Copy to use it elsewhere. ✦ TONE CONTROLS Choose from four writing modes: Improve — enhances clarity and flow Simplify — uses plain, easy-to-read language Formal — creates a professional tone Casual — makes the text more friendly and conversational Use the Tune panel for quick actions like Shorten, Fix Grammar, or Expand, or add your own custom instruction. ✦ YOUR CHOICE OF AI Compatible with OpenAI (GPT-4o), Anthropic Claude, Google Gemini, and Ollama (local models — no API key required). Switch providers anytime from Settings. ✦ COMPLETE PRIVACY Your API keys and writing history stay in your browser. There’s no backend server — all AI requests are sent directly from your device to your chosen provider. No accounts, no tracking, no ads.