Find out exactly
what's wrong
with your site.
Security vulnerabilities · GDPR & legal exposure · WCAG accessibility failures · SEO blind spots · Broken code.
Paste a URL or HTML — ranked, plain-English report in under 30 seconds.
Five layers of validation
Every scan runs all five in parallel. Nothing gets skipped.
- CSP & security headers
- XSS, eval() & innerHTML
- WebSocket exfiltration
- ServiceWorker hijacking
- CSS keylogger patterns
- Clipboard hijacking
- Shadow form theft
- Phishing / homograph links
- Hidden CSRF iframe riders
- Screen reader support
- Colour contrast ratios
- Keyboard navigation
- Image alt text
- WCAG 2.2 AA standard
- Focus indicators
- ARIA landmark regions
- Broken / invalid HTML
- Deprecated elements
- Performance issues
- Mobile compatibility
- CSS & JS errors
- Missing meta tags
- Heading structure
- Page speed signals
- Social share previews
- Schema markup
- GDPR cookie consent
- Privacy policy presence
- ADA Title III exposure
- CCPA & CalOPPA
- EU Accessibility Act 2025
- Dark pattern detection
- Pre-ticked consent boxes
- Hidden keyword injection
- aria-hidden content mismatch
- DNS prefetch beacons
- Canonical tag validation
- Duplicate content blocks
How it works
From URL to full report in under 30 seconds.
Not just another audit tool
Most tools check one thing. SENTINEL checks five — simultaneously — and tells you what it means legally.
James Brooks
28 · Systems Builder
Self-directed, self-taught, and AI-assisted, James builds modular systems across software, ideas, and workflows.
His edge lies in identifying structural gaps between components — technical, relational, and conceptual — and engineering bridges that turn fragmented systems into coherent, functional architectures. He operates at the intersection of systems thinking, engineering logic, and intuitive pattern recognition. SENTINEL is a recent artifact of this process.
Start free. Scale when you need.
Use SENTINEL free without an account. Upgrade for API access, scan history, PDF exports, team tools, and more.
- 10 scans / month
- Security scanning
- HTML + SEO checks
- Accessibility (WCAG)
- Legal compliance
- PDF Export
- Scan history
- 500 scans / month
- All 5 scan layers
- WCAG 2.2 accessibility
- Legal compliance check
- PDF Export
- Scan history + Diff
- ROI Calculator
- API access
- 2,000 scans / month
- All Pro features
- Bulk scan (50 URLs)
- Site-wide crawl
- 10 team seats
- Industry benchmarks
- Unlimited scans
- All Team features
- White label
- Custom integrations
- SLA 99.9% uptime
- Dedicated support
liability or an asset?