Improve Sentence

Tracking since Apr 16, 2026.

Changelog

• Apr 29, 2026
  description

  Improve Sentence is an AI-powered writing assistant that rewrites any text you select on any webpage — instantly and privately.
  
  ✦ HOW IT WORKS
  1. Select any text on any page
  2. Press Cmd+Shift+K (or right-click → "Improve Sentence")
  3. See the improved version appear in a sleek overlay panel
  4. Click Accept to replace the text, or Copy to use it elsewhere
  
  ✦ TONE CONTROLS
  Choose from four writing modes: Improve (clarity & flow), Simplify (plainer language), Formal (professional tone), or Casual (friendly tone). Use the Tune panel to apply quick actions like Shorten, Fix grammar, or Expand — or add a custom instruction.
  
  ✦ YOUR CHOICE OF AI
  Works with OpenAI (GPT-4o), Anthropic Claude, Google Gemini, and Ollama (local models, no API key needed). Switch providers any time from Settings.
  
  ✦ COMPLETELY PRIVATE
  Your API keys and writing history never leave your browser. There is no backend server — all AI calls go directly from your browser to the provider you choose. No accounts, no tracking, no ads.
  
  ✦ KEYBOARD SHORTCUT
  Cmd+Shift+K (Mac) / Ctrl+Shift+K (Windows/Linux) — works on any selected text, anywhere on the web.

  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.

Permissions & access

Permissions

activeTabstoragescriptingcontextMenus

Host access

https://api.openai.com/*, https://api.anthropic.com/*, https://generativelanguage.googleapis.com/*, http://localhost:11434/*, <all_urls>

Screenshots