An SEO audit is a comprehensive analysis of your website's search engine optimization health. This checklist covers everything you need to identify and fix issues hurting your rankings.
Technical SEO Checklist
Crawling & Indexing
- XML sitemap exists and is submitted to Search Console
- Robots.txt is properly configured
- No important pages blocked by robots.txt
- No orphan pages (pages with no internal links)
- Crawl depth is 3 clicks or less for important pages
- No excessive redirect chains
Site Speed & Core Web Vitals
- LCP under 2.5 seconds
- INP under 200 milliseconds
- CLS under 0.1
- TTFB under 800 milliseconds
- Images optimized (WebP/AVIF format)
- CSS and JavaScript minified
- Browser caching enabled
- CDN in use for static assets
Security & Mobile
- HTTPS enabled on all pages
- HTTP redirects to HTTPS
- Mobile-friendly responsive design
- No intrusive interstitials
- Viewport meta tag configured
On-Page SEO Checklist
Meta Tags & Headers
- Unique title tag on every page (50-60 characters)
- Unique meta description on every page (150-160 characters)
- One H1 tag per page containing primary keyword
- Logical heading hierarchy (H1 → H2 → H3)
- Open Graph tags for social sharing
- Canonical tags on all pages
URLs & Links
- SEO-friendly URLs (short, descriptive, keyword-included)
- No broken internal links (404 errors)
- Internal links use descriptive anchor text
- Important pages linked from homepage
- External links open in new tab
Images & Media
- All images have descriptive alt text
- Images use descriptive filenames
- Images are appropriately sized (not oversized)
- Lazy loading enabled for below-fold images
Content Checklist
- Content matches search intent
- Content is comprehensive and adds unique value
- No duplicate content issues
- No thin content pages (under 300 words without value)
- Content is up-to-date and accurate
- E-E-A-T signals (author bios, citations, credentials)
AI Visibility Checklist
- llms.txt file exists and is well-structured
- AI crawlers (GPTBot, Claude-Web) allowed in robots.txt
- Schema.org structured data implemented
- FAQ schema on relevant pages
- Content includes citable facts and statistics
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