SEO Audit Checklist for 2026 — Complete Technical & Content Review
Technical SEO Audit
- Site loads under 3 seconds on mobile (Google PageSpeed Insights)
- Core Web Vitals passing (LCP, INP, CLS)
- Mobile-friendly design (Google Mobile-Friendly Test)
- SSL certificate active and no mixed content warnings
- XML sitemap submitted to Google Search Console
- Robots.txt properly configured
- No duplicate content or canonical issues
- Structured data (schema markup) implemented correctly
- Clean URL structure (no parameters, no excessive depth)
- 404 errors identified and redirected
On-Page SEO Audit
- Every page has a unique, keyword-targeted title tag (under 60 characters)
- Meta descriptions are compelling and under 160 characters
- One H1 per page containing the primary keyword
- Proper heading hierarchy (H1 → H2 → H3)
- Internal linking connects related pages
- Images have descriptive alt text
- Content is comprehensive and answers user intent
- CTAs are clear and above the fold
Content & Backlink Audit
- Identify thin or outdated content pages for updating or consolidation
- Check keyword rankings and identify content gaps
- Review backlink profile for toxic or spammy links
- Compare domain authority against competitors
- Identify link-building opportunities (guest posts, directories, partnerships)
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