Common warnings by category
Technical SEO — SSL check failed but page loaded over HTTPS, SSL certificate expiring soon, robots.txt not found, sitemap not declared in robots.txt, favicon SVG-only without ICO/PNG fallback, www and non-www both serve content (duplicate), service pages (/privacy, /contact, /terms) lacking noindex, sitemap URL domain mismatch. On-Page SEO — title too short or too long (outside 30–60 chars), meta description missing or too short, images without alt text, shallow heading structure (no H2/H3 after H1), multiple H1 tags, low word count. Content Quality — average sentence length > 25 words, Flesch reading ease < 40, more than 5 long sentences (>25 words each), keyword density exceeding 3% for any single word. Links — 1–5 broken links detected (more than 5 becomes critical). Architecture — HSTS header missing, Cache-Control header missing, URL too deep or too long, low anchor text diversity (<50% unique anchors). Trust Signals — missing privacy policy, about page, author info, Organization schema, or social links. HTTPS missing is the only critical-level trust signal. AI Readiness — missing Entity Schema, sameAs links, or FAQ schema. Other AI signals (definitions, TL;DR, comparison tables, etc.) are info-level. Indexability — missing HTML lang attribute, IndexNow key found but verification file not accessible, canonical issues.
When to address warnings
After resolving all critical issues, work through warnings by category weight. Focus on Technical SEO and On-Page SEO warnings first (15% weight each), then Content Quality, Links, and other categories (10% each).
Warning count — Total number of warning-severity findings across all categories.