Grammar Check - AI Grammar & Spelling Checker

Grammar Check underlines grammar, spelling, and style issues in text fields on any website, using the AI model you choose. There is no account, no server in between, and no tracking: your browser talks directly to your AI provider. USE A LOCAL MODEL OR YOUR OWN KEY • Local models through any OpenAI-compatible endpoint: Ollama, Open WebUI, LM Studio. Your text never leaves your machine. • Or bring your own API key for Google Gemini, OpenAI, Anthropic Claude, or Hugging Face. FEATURES • Real-time underlines in text areas, rich-text editors, and text inputs • One-click fixes with a short explanation for every suggestion • Rewrite menu: select text to Formalize, make Friendly, Shorten, Proofread, or Translate it • Personal dictionary for names and jargon • Keyboard shortcut: Ctrl+Shift+G (Cmd+Shift+G on Mac) • Dark mode PRIVACY FIRST • Text is sent only to the AI provider you configure, and only when a check or rewrite runs • API keys are stored locally on your device and never synced • Password, email, payment, login, and other sensitive fields are skipped automatically • No analytics, telemetry, or third-party scripts Open source (MIT): https://github.com/Mangesh-P/grammer-check