ZeroCloud AI — Private AI Assistant

Summarize, write, translate, check tone and more — 100% on-device, 100% private. Powered by Gemini Nano.

18 free AI tools that run 100% on your device. No data ever leaves your browser. ZeroCloud AI is a privacy-first AI assistant powered by Chrome's built-in Gemini Nano. Summarize articles, rewrite emails, translate text, check tone, generate hashtags, and more — all without sending a single byte to the cloud. FEATURES: - 18 AI Tools — Summarize, Rewrite, Translate, Simplify, Tone Check, Quick Reply, Extract Data, Explain Code, Enhance Prompt, Subject Line, Hashtags, Classify, Thread Summary, Expand Text, Meeting Notes, Page Q&A, Chat, Write - 100% On-Device — Powered by Gemini Nano, everything runs locally in Chrome - Selection Toolbar — Highlight text on any page, get instant AI actions - Customizable Toolbar — Choose which tools appear in the floating toolbar - Keyboard Shortcuts — Alt+Shift+S (Summarize), Alt+Shift+R (Rewrite), Alt+Shift+T (Translate), Alt+Shift+W (Write), plus 4 more assignable - Pin Favorite Actions — Star your most-used tools for quick access - Side Panel — Full writing assistant and chat in the sidebar - Cloud AI Option — Optionally use Gemini API or Qwen for faster responses (bring your own key) - Smart Reply — Auto-generates reply suggestions in Gmail, Outlook, LinkedIn, Slack, Discord, and more - Prompt Enhancer — Improves your prompts on ChatGPT, Gemini, Claude, and other AI sites - 30+ Languages — Set your preferred response language - Dark Mode — Follows your system theme - Guided Setup — Step-by-step onboarding for first-time users WHAT'S NEW IN v1.4: - Onboarding wizard for easy setup - Keyboard shortcuts for power users - Pin favorite actions to the top - Customizable selection toolbar - Response language override - Cloud AI fallback (Gemini API / Qwen) - Share & rate prompts PRIVACY: - Zero data collection — no analytics, no tracking, no telemetry - No account required - No external API calls in default mode - Your text never leaves your device Works on Chrome 131+ with Gemini Nano enabled.