30x Seo Technical

Technical SEO Audit

Categories

1. Crawlability

• robots.txt: exists, valid, not blocking important resources
• XML sitemap: exists, referenced in robots.txt, valid format
• Noindex tags: intentional vs accidental
• Crawl depth: important pages within 3 clicks of homepage
• JavaScript rendering: check if critical content requires JS execution
• Crawl budget: for large sites (>10k pages), efficiency matters

AI Crawler Management

> For detailed checks, use seo-geo-technical

This skill only checks basic robots.txt configuration. For detailed AI crawler checks (GPTBot, ClaudeBot, PerplexityBot), llms.txt generation, and SSR checks, use seo-geo-technical.

2. Indexability

• Canonical tags: self-referencing, no conflicts with noindex
• Duplicate content: near-duplicates, parameter URLs, www vs non-www
• Thin content: pages below minimum word counts per type
• Pagination: rel=next/prev or load-more pattern
• Hreflang: correct for multi-language/multi-region sites
• Index bloat: unnecessary pages consuming crawl budget

3. Security

• HTTPS: enforced, valid SSL certificate, no mixed content
• Security headers:
• Content-Security-Policy (CSP)
• Strict-Transport-Security (HSTS)
• X-Frame-Options
• X-Content-Type-Options
• Referrer-Policy
• HSTS preload: check preload list inclusion for high-security sites

4. URL Structure

• Clean URLs: descriptive, hyphenated, no query parameters for content
• Hierarchy: logical folder structure reflecting site architecture
• Redirects: no chains (max 1 hop), 301 for permanent moves
• URL length: flag >100 characters
• Trailing slashes: consistent usage

5. Mobile Optimization

• Responsive design: viewport meta tag, responsive CSS
• Touch targets: minimum 48x48px with 8px spacing
• Font size: minimum 16px base
• No horizontal scroll
• Mobile-first indexing: Google indexes mobile version. Mobile-first indexing is 100% complete as of July 5, 2024. Google now crawls and indexes ALL websites exclusively with the mobile Googlebot user-agent.

6. Core Web Vitals

• LCP (Largest Contentful Paint): target ` but JavaScript removes it, Google MAY still honor the noindex from raw HTML. Serve correct robots directives in the initial HTML response.

1. Non-200 status codes: Google does NOT render JavaScript on pages returning non-200 HTTP status codes. Any content or meta tags injected via JS on error pages will be invisible to Googlebot.
2. Structured data in JavaScript: Product, Article, and other structured data injected via JS may face delayed processing. For time-sensitive structured data (especially e-commerce Product markup), include it in the initial server-rendered HTML.

Best practice: Serve critical SEO elements (canonical, meta robots, structured data, title, meta description) in the initial server-rendered HTML rather than relying on JavaScript injection.

9. IndexNow Protocol

• Check if site supports IndexNow for Bing, Yandex, Naver
• Supported by search engines other than Google
• Recommend implementation for faster indexing on non-Google engines

Output

Technical Score: XX/100

Category Breakdown

| Category | Status | Score | |----------|--------|-------| | Crawlability | ✅/⚠️/❌ | XX/100 | | Indexability | ✅/⚠️/❌ | XX/100 | | Security | ✅/⚠️/❌ | XX/100 | | URL Structure | ✅/⚠️/❌ | XX/100 | | Mobile | ✅/⚠️/❌ | XX/100 | | Core Web Vitals | ✅/⚠️/❌ | XX/100 | | Structured Data | ✅/⚠️/❌ | XX/100 | | JS Rendering | ✅/⚠️/❌ | XX/100 |

Critical Issues (fix immediately)

High Priority (fix within 1 week)

Medium Priority (fix within 1 month)

Low Priority (backlog)

[PROTOCOL]: Update this header on changes, then check CLAUDE.md

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: norahe0304-art
• Source: norahe0304-art/30x-seo
• License: MIT

Install and usage instructions live in the source repository linked above.