SEO Checker

Instantly checks any page for multiple SEO issues: meta, headings, links, images, schema, gsc performance, and more.

SEO Checker – Fast On-Page SEO Audit for Any Website SEO Checker helps you analyze any webpage instantly with automated SEO checks directly inside your browser. Get clear insights for technical SEO, content quality, metadata, links, images, schema markup, and performance signals — all in one simple popup. No complicated setup. No confusing reports. Just open any page and start auditing. WHAT SEO CHECKER ANALYZES META & SEARCH SNIPPETS • Title tags and title length • Meta descriptions • Canonical tags • Noindex directives • Robots meta tags • Duplicate or conflicting tags CONTENT & HEADINGS • H1 presence • Heading hierarchy (H1–H6) • Duplicate headings • Thin content signals • Keyword usage checks • Word count • Hidden text detection TECHNICAL SEO • HTTPS / HTTP support • Viewport tag • Charset declaration • Language attribute • Favicon checks • URL structure issues • Mixed content warnings • DOM size and page complexity PERFORMANCE SIGNALS • Render-blocking resources • Largest Contentful Paint hints • Font loading best practices • Heavy scripts and assets • Speed-related page issues IMAGES & MEDIA • Missing alt text • Oversized images • Low-resolution images • Responsive image usage • Lazy loading checks • Aspect ratio issues LINKS • Internal and external link review • Duplicate links • Broken anchors • Empty anchor text • Nofollow checks • Link count overview STRUCTURED DATA • Schema markup detection • JSON-LD checks • Breadcrumb schema • Missing recommended fields SOCIAL TAGS • Open Graph tags • Twitter Cards • OG image checks • Social preview readiness HOW IT WORKS 1. Visit any webpage 2. Open SEO Checker 3. Audit runs instantly 4. Review issues by category and severity 5. Improve your page faster PRIVACY FIRST Everything runs locally in your browser. • No tracking • No unnecessary data collection • No data selling • No account required for core features Your page analysis stays on your device. SEARCH CONSOLE INTEGRATION (OPTIONAL / Pro) Connect Google Search Console to view page performance data directly inside the extension. See useful metrics such as: • Clicks • Impressions • CTR • Average Position • Query insights • Trend comparisons LIGHTWEIGHT PERMISSIONS • Storage – save settings and results locally • Tabs – analyze the current page • Identity – optional Google login for Search Console Whether you manage your own website or audit client pages, SEO Checker helps you find issues quickly and make smarter SEO decisions — without expensive software.