LexiLint: Proofread published webpages
Check the entire page in one click
Proofread the rendered page before readers see it. Spell checking runs on your device; optional AI grammar uses the provider key you configure.
See LexiLint in Action
Features
Offline Spell Checking
- Checks supported live, staging, and localhost pages
- US and UK English variants included; six additional languages with Premium
- Recognises newer English words, such as "crypto" and "codebase"
- Custom dictionary for technical terms, names, and brands
- No extension usage analytics or remote error reporting
- Highlights possible misspellings on the rendered page
AI Grammar Checking
- Grammar, style, clarity, punctuation checking
- Multi-provider support: Gemini (free), OpenAI (premium), Claude (premium)
- Bring Your Own API Key (BYOK) - you control the data
- Checks headings, paragraphs, and lists in context
- Checks up to three page sections at the same time, so longer pages finish sooner
- Keeps checking when you close the popup; reopen it to see progress or results
How It Works
- Click the LexiLint icon in your browser toolbar
- Click "Check Spelling" for an offline scan
- Click "Check Grammar" for AI analysis (free with your own Gemini API key)
- Click highlighted errors to see suggestions
- Accept suggestions or add words to custom dictionary
Who Uses LexiLint?
Content Creators
"Publish every page with confidence."
Articles, posts, and landing pages.
Developers
"Ship clean copy with the code."
Staging, localhost, and documentation.
Professionals
"Make every client-facing page polished."
Client sites, presentations, and reports.
Editors & QA
"Give every page one final check."
Review live pages before readers do.
LexiLint and Grammarly solve different jobs
Grammarly helps you write. LexiLint helps you publish.
Use Grammarly while typing. Use LexiLint to check the finished webpage.
| Feature | LexiLint | Grammarly |
|---|---|---|
| Check published webpages | ✓ | ✗ |
| Works on localhost/staging sites | ✓ | ✗ |
| 100% offline spell checking | ✓ | ✗ |
| BYOK (Your own API key) | ✓ Free | ✗ |
| Check while typing in email/text fields | ✗ | ✓ |
| Works in Gmail, Google Docs, Slack | ✗ | ✓ |
How offline spell check stays offline
One click. No uploads. Zero network requests.
- LexiLint reads the visible text on the page.
- It checks each word locally using the dictionary for your selected language.
- Suggestions appear directly on the page.
AI grammar goes directly to your chosen provider using your own API key. Ignite App never receives the text.
Spell-check inside Claude and Cursor
Use LexiLint MCP to proofread AI-generated text with a local dictionary, without an AI provider call for the spell check.
- Works with Claude Desktop, Cursor and OpenAI Codex
- One-line install:
npx -y lexilint-mcp - Offline spell check; BYOK for AI grammar
Your Words. Your Privacy.
Offline spell check stays on your device. AI grammar goes directly to the provider you choose.
On-Device Spell Checking
The spell-check operation does not upload page text and works without an internet connection.
BYOK Provider Choice
Optional grammar checking sends the page's visible text directly to the provider configured with your API key.
No Extension Analytics
The current extension does not collect usage analytics, telemetry, or page text.
Browser Profile Storage
Provider keys are stored through Chrome's extension storage API and are not sent to Ignite App. Protect access to your device and browser profile.
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