Site Inspector runs 130+ automated checks on any website in one click. No account needed, no data sent anywhere. Everything runs locally in your browser. You get instant grades (A+ to F) across 6 categories: SECURITY (21 checks) - HTTPS, HSTS, CSP quality analysis - Security headers (X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy) - SRI verification for third-party scripts - Mixed content detection - security.txt (RFC 9116) presence SEO (55+ checks) - Title tag length and quality - Meta description CTA detection (English + Swedish) - Heading hierarchy validation (H1 through H6) - Open Graph and Twitter Card completeness - OG image dimensions (1200x630 check) - Structured data / JSON-LD detection and type listing - FAQ schema vs visible content validation - Canonical tag validation (tracking param aware) - Hreflang tags - External outbound link count - Descriptive alt text quality (not just presence) - llms.txt for AI search readiness - robots.txt and XML sitemap detection - SERP preview PERFORMANCE (18 checks) - Core Web Vitals: LCP, INP, CLS - TTFB, FCP, DOM Content Loaded - Page weight and request count - Image format, lazy loading, dimensions - Font loading (font-display, file count, Google Fonts family count) - Inline CSS bloat detection - Render-blocking script detection - HTTP/2+ protocol check PRIVACY (12 checks) - Consent banner detection (16 platforms supported) - Pre-consent tracking detection (GDPR violation) - Cookie count and security audit - Third-party domain count - Tracker identification - AI training bot blocking check - Privacy policy detection (warns on external-only policies) - Terms and cookie policy detection ACCESSIBILITY (21 checks) - WCAG AA color contrast analysis (skips image/gradient backgrounds) - Landmark roles (main, nav, header, footer) - Skip navigation link - Form labels and button labels - Image alt text - Video captions - Heading order and structure - Keyboard focus indicators TECH STACK DETECTION - Identifies frameworks, CMS platforms, page builders, hosting providers, and analytics tools - Detects 30+ technologies across 5 categories EXPORT OPTIONS - PDF report with full findings - CSV export for spreadsheets KEYWORD ANALYSIS - Top keyword extraction with density percentages - Keyword distribution across headings vs body Built by Bright Interaction (https://brightinteraction.com) - a security and compliance company based in Sweden. We use this tool ourselves to audit 599+ websites. 100% free. No ads. No tracking. No account required. Category Developer Tools Language English Privacy Policy URL https://brightinteraction.com/privacy Homepage URL https://brightinteraction.com/platform What's New in 1.4.0

Redirect detection: prevents mixing headers from one site with content from another after navigation
Report URL now shows the actual analyzed page, not the tab URL (fixes wrong URL in reports)
Performance scoring rebalanced: DOMContentLoaded and Full Load thresholds relaxed and graduated (no more F grades for 3-second loads)
TTFB "good" threshold raised from 300ms to 500ms (realistic for most hosting)
URL length check now uses canonical URL, no longer penalizes pages for UTM/tracking parameters
CSP wildcard detection: no longer flags subdomain patterns (*.example.com) as bare wildcards
Consent banner detection: added CookieScript, HubSpot Cookie Banner
Third-party domain classification: added Bing, Snapchat, Storyblok, Squarespace, Trustpilot, Voyado, New Relic, and more
Cookie classification: added Didomi, CookieScript consent cookies
HubSpot domains (hs-banner, hs-analytics, hs-scripts, etc.) now properly categorized

What's New in 1.3.1

Accuracy improvements from testing against Forbes, Apple, CDON, Nelly, Brownells, AlternativeTo, Product Hunt, and more
FAQ schema: validates question text appears on page (any layout, not just accordions)
Heading hierarchy: correctly fails when H1 is missing
CTA detection: now supports Swedish meta descriptions
Canonical check: no longer flags tracking params as mismatches
Privacy policy: warns when policy links to external domain instead of your own
Contrast analysis: skips text over images/gradients (eliminates false 1:1 ratios)
TTFB thresholds aligned with Google guidance (300ms/800ms)
Plaintext email detection: filters out logged-in user emails in navigation
Empty link checks: SEO and Accessibility now use consistent criteria

What's New in 1.3.0

12 new checks (130+ total, up from 80+)
AI search readiness: llms.txt detection, AI training bot blocking check
SEO: meta description CTA analysis, alt text quality, external link count, FAQ schema validation, title truncation warning, OG image dimensions
Privacy: AI training bot detection in robots.txt
Performance: Google Fonts count, inline CSS bloat detection
Tech stack: page builder detection
Removed: outreach email generator