About Crawlix
A free, privacy-first SEO analyzer that runs entirely in your browser — no servers, no tracking, no nonsense.
Why Crawlix Exists
Most SEO tools are either expensive SaaS products that lock features behind paywalls, or they require an account, send your data to external servers, and bombard you with upsells. We wanted something different.
Crawlix is a tool built for developers, indie hackers, content creators, and anyone who wants a quick, honest look at a page's SEO — without signing up, paying, or worrying about where their data goes.
Everything runs in your browser. The HTML is fetched and parsed locally. No analytics, no cookies, no data sent anywhere. Just you and the page you want to analyze.
What Crawlix Analyzes
Meta Tags
Title, description, OG tags, Twitter cards, canonical, charset, language
Readability
Flesch Reading Ease score and grade level estimation
Keywords
1, 2, and 3-word phrase density and frequency analysis
Images
Alt text coverage, dimensions, and lazy loading attributes
Links
Internal vs external links, anchor text, and nofollow detection
Headings
H1–H6 hierarchy, duplicate H1 detection, skipped levels
Schema
JSON-LD structured data parsing and validation
Issues
20+ SEO issues with severity levels and actionable suggestions
Tech Stack
Next.js 14
React framework
TypeScript
Type-safe code
Tailwind CSS
Utility-first styling
Framer Motion
Smooth animations
Browser APIs
DOMParser, Fetch
No backend
Runs 100% client-side
Privacy First
- ✓No user accounts or registration required.
- ✓No analytics or tracking scripts embedded.
- ✓URLs you analyze are never sent to our servers — everything is parsed locally in your browser.
- ✓No cookies set, no data stored beyond your current session.
- ✓Open-source: read every line of code on GitHub.
Built by Krinc
Krinc builds free, open-source tools for developers and creators. Crawlix is one of many projects in the krinc.in ecosystem.
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Support the Project
Crawlix is free forever and open-source. If it's been useful to you, consider buying me a coffee. It motivates me to keep building and adding new features.