LexiLint vs Grammarly: Privacy
LexiLint collects zero data. Spell checking is 100% offline — nothing leaves your device. AI grammar uses BYOK, so your text goes directly to your chosen provider. Grammarly routes all text through its own cloud servers for processing.
🤖 New: LexiLint for AI Assistants
Use LexiLint's spell and grammar checking directly in Claude Desktop, ChatGPT, Cursor, and other AI assistants via the Model Context Protocol (MCP).
How Each Tool Handles Your Text
LexiLint: Your Device Only
Spell check: Dictionaries are bundled in the extension. Text is never transmitted — zero network requests.
AI grammar: Uses your own API key. Your browser sends text directly to Google Gemini, OpenAI, or Claude. LexiLint's servers receive nothing.
Grammarly: Cloud Processing
All checking: Text is sent to Grammarly's cloud servers for analysis. Grammarly's business model includes processing your writing to provide AI suggestions.
API key: Grammarly does not support BYOK. You cannot choose or control which AI model processes your text.
Full Privacy & Feature Comparison
| Feature | LexiLint | Grammarly |
|---|---|---|
| Spell check data sent to servers | Never — 100% offline | ⚠️ Yes, cloud-processed |
| Grammar check data sent to servers | To your AI provider only (BYOK) | ⚠️ Grammarly's cloud |
| Works 100% offline (spell check) | ✓ | ✗ |
| BYOK — choose your AI provider | ✓ Gemini, OpenAI, Claude | ✗ Locked to Grammarly's AI |
| Data collection | Zero without consent | ⚠️ Yes |
| Usage tracking / telemetry | None | ⚠️ Yes |
| Check published webpages | ✓ | ✗ |
| Works on localhost & staging | ✓ | ✗ |
| Real-time typing suggestions | ✗ | ✓ |
| Works in Gmail / Google Docs / Slack | ✗ | ✓ |
| Free tier | ✓ Spell check + Gemini AI | ✓ Limited |
Different Tools. Different Missions.
Grammarly helps you write — real-time suggestions in your inbox and documents. LexiLint helps you publish — checking the finished page before (and after) it goes live.
Both tools matter. Use the right one for the job. Many people use both.
Frequently Asked Questions
Does Grammarly collect my data?
Grammarly processes text on its cloud servers. When you type with Grammarly active, your text is transmitted to Grammarly for analysis. For full details on what is collected and retained, refer to Grammarly's official privacy policy.
Is LexiLint more private than Grammarly?
For spell checking, yes — LexiLint is fully offline and sends zero data. For AI grammar, LexiLint uses BYOK: your text goes directly to the AI provider you configured using your own key. LexiLint's servers receive nothing. Grammarly routes all text through its own cloud infrastructure.
What is the main difference between LexiLint and Grammarly?
They serve different use cases. LexiLint checks published webpages, localhost, and staging sites — built for developers, content creators, and anyone who needs to proofread a page after it's live. Grammarly assists while you're actively typing in Gmail, Google Docs, and Slack. Use LexiLint to check a page; use Grammarly to draft an email.
Can LexiLint work on sites Grammarly can't?
Yes. LexiLint works on any URL Chrome can load — including localhost, staging environments, and internal tools. Grammarly restricts access to custom or local URLs. LexiLint has no such limitation.
Can I use LexiLint and Grammarly together?
Yes. Many users do. Use Grammarly while drafting. Use LexiLint to proofread the published result — especially on pages Grammarly can't reach, like your live website or staging environment.
Privacy-First Grammar Checking for Your Published Pages
LexiLint checks webpages, localhost, and staging sites with zero data collection. Free spell check. Free AI grammar with your Gemini key.
Add to Chrome — Free