Complete SEO Audit Checklist 2026

1. Crawlability checks

Before search engines can rank your pages, they need to find and crawl them. These checks ensure nothing blocks access.

• Verify robots.txt is accessible and not blocking important paths
• Check for accidental Disallow: / directives
• Submit an XML sitemap to Google Search Console and Bing Webmaster Tools
• Ensure sitemap URLs return 200 status codes
• Keep crawl depth under 4 clicks from the homepage

2. Indexability checks

Crawlable does not mean indexable. Confirm that the pages you want ranked can actually appear in search results.

• Search site:yourdomain.com to see indexed page count
• Check for unintended noindex meta tags or HTTP headers
• Ensure canonical tags point to the correct preferred URL
• Resolve duplicate content issues (www vs non-www, HTTP vs HTTPS)
• Fix redirect chains longer than 2 hops

3. On-page SEO

On-page elements directly influence how search engines understand your content and how users decide to click.

• Every page has a unique <title> tag (50-60 characters)
• Meta descriptions are compelling and under 160 characters
• Each page has exactly one <h1> tag
• Heading hierarchy is logical (h1 > h2 > h3, no skipping)
• Images have descriptive alt attributes
• URLs are clean, descriptive, and use hyphens

See the complete meta tags guide for detailed examples.

4. Content quality

• Content matches search intent for target keywords
• Thin pages (<300 words) are expanded or consolidated
• No keyword stuffing — write naturally
• Content is fresh and regularly updated
• E-E-A-T signals: author bios, citations, expertise indicators

5. Technical infrastructure

• HTTPS enabled on all pages with valid SSL certificate
• HTTP to HTTPS redirects in place (301, not 302)
• No mixed content warnings
• Custom 404 page with navigation
• Server response time under 200ms (TTFB)
• Proper HTTP status codes (no soft 404s)

6. Internal linking

• Important pages have links from the homepage or main navigation
• No orphan pages (pages with zero internal links pointing to them)
• Anchor text is descriptive, not "click here"
• No broken internal links (404s)
• Breadcrumb navigation implemented

7. Mobile friendliness

• Viewport meta tag is present and correctly configured
• Text is readable without zooming (minimum 16px body text)
• Tap targets are at least 48x48px with adequate spacing
• No horizontal scrolling on mobile devices
• Content is not hidden behind interstitials

8. Performance

Page speed is a direct ranking factor. See our Core Web Vitals guide and page speed guide for deep dives.

• LCP under 2.5 seconds
• INP under 200 milliseconds
• CLS under 0.1
• Images are optimized (WebP/AVIF, lazy loaded, properly sized)
• CSS and JS are minified and compressed

9. Structured data

Structured data earns rich results in search. See the structured data guide for implementation details.

• JSON-LD implemented (preferred over Microdata)
• Validated in Google Rich Results Test
• Appropriate schema types: Article, Product, FAQ, BreadcrumbList, Organization

10. Off-page signals

• Google Business Profile is claimed and complete (for local SEO)
• Backlink profile is healthy — no spammy or toxic links
• Social media profiles link back to your website
• Brand mentions are consistent across the web