LexiLint

Spell-check entire webpages, not just input fields. Free AI grammar checking with your own Gemini API key. Offline & private.

Catch typos before your readers do. LexiLint is the first browser extension that spell-checks and grammar-checks entire webpages - articles, blog posts, documentation - not just input fields. Stop finding errors after publication. Catch them while reading. 🆕 WHAT'S NEW (v1.1.3) • Spanish language support added for spelling and grammar • 8 languages now supported (English US/UK + 6 premium) • AI Model Selection - Choose GPT-5, Claude Opus 4.5, Gemini 2.5 Pro • Enhanced security with cryptographic license verification ✨ FEATURES FREE SPELL CHECKING (100% Offline) • Works on any webpage - no internet required • US & UK English dictionaries included • Custom dictionary - add technical terms, names, brand names • Zero tracking, zero data collection • Instant results with visual highlights FREE AI GRAMMAR CHECKING • Grammar, style, clarity, and punctuation checking • Powered by Google Gemini 2.5 Flash (free tier: 1500 requests/day) • Bring Your Own API Key (BYOK) - you control the data • Context-aware checking for headings, paragraphs, lists, quotes PREMIUM: MULTI-LANGUAGE SUPPORT (8 Languages) • Free tier: English (US & UK) • Premium tier: Spanish, French, German, Polish, Russian, Turkish • All languages support both spelling AND grammar checking • Test all languages during 7-day free trial PREMIUM: ADVANCED AI PROVIDERS • OpenAI GPT-5 / GPT-4 - Industry-leading grammar analysis • Anthropic Claude Opus 4.5 / Sonnet 4.5 - Advanced reasoning and style • Gemini 2.5 Pro / Flash - Fast and accurate checking • AI Model Selection - Choose your preferred model • All providers use BYOK (you provide your own API key) 🎯 WHY LEXILINT? Unlike Grammarly/LanguageTool (input fields only), LexiLint checks: • Published content - Find errors in live articles, docs, and blog posts • 100% privacy-first - Offline spell check, your own API keys for grammar • Free forever - Core features never require subscription 💎 PREMIUM PRICING • Lifetime access: $29.99 (one-time payment) • Monthly subscription: $2.99/month (7-day free trial, cancel anytime) Secure checkout via Polar.sh (powered by Stripe) 🔒 PRIVACY GUARANTEE • Spell checking: 100% offline, never leaves your device • Grammar checking: Text sent to YOUR chosen AI provider using YOUR API key • No tracking of your browsing or text content • API keys stored locally in Chrome's encrypted storage • Zero data collection, zero surveillance Full privacy policy: https://igniteapp.net/lexilint/privacy/ 💬 SUPPORT • Email: lexilint@igniteapp.net • Response time: Usually within 24 hours • Feature requests welcome! --- Built with ❤️ for writers, developers, content creators, and anyone who reads on the web.