SEO Audit

seo-audit

Core Philosophy

An SEO audit is not an automated 150-page export from Screaming Frog dumped into a client's inbox. An effective technical and on-page SEO audit provides prioritized, engineering-ready remediation instructions categorized by business impact: P0 issues that actively destroy indexation and crawl budgets, P1 structural and architectural fixes that unlock keyword rankings, and P2 content optimization opportunities.

4-Step Systematic SEO Audit Protocol

Step 1: Technical Crawlability & Indexation (P0 Gates)

1. Robots.txt & Meta Directives:
   • Inspect robots.txt for unintended Disallow rules blocking critical CSS/JS bundles or high-value directories.
   • Verify X-Robots-Tag and <meta name="robots"> tags for rogue noindex directives on production pages.
2. HTTP Status & Redirect Architecture:
   • Crawl all internal URLs: Flag 4xx client errors and 5xx server errors.
   • Identify redirect chains ($A o B o C$) and redirect loops; enforce 1-hop 301 redirects directly to canonical targets.
3. XML Sitemap Hygiene:
   • Ensure sitemaps contain exclusively 200 OK, canonical, indexable URLs.
   • Verify sitemap submission in Google Search Console and ensure file size $< 50text{MB}$ and $< 50,000$ URLs per file.
4. Canonicalization Verification:
   • Audit rel="canonical" tags: Ensure every indexable page has a self-referencing canonical or points to its primary deduplicated URL.
   • Verify protocol and domain consistency (enforce HTTPS and non-WWW vs WWW canonicalization).

Step 2: Core Web Vitals & Frontend Performance

1. Google Core Web Vitals Targets:
   • Largest Contentful Paint (LCP): $\le 2.5text{s}$ (Optimize hero image preloading, eliminate render-blocking CSS).
   • Interaction to Next Paint (INP): $\le 200text{ms}$ (Break up long main-thread JavaScript tasks).
   • Cumulative Layout Shift (CLS): $\le 0.1$ (Set explicit width and height on all image and iframe tags).
2. Server Response Time:
   • Target Time to First Byte (TTFB) $\le 800text{ms}$ globally via edge caching and CDN optimization.

Step 3: Site Architecture & Internal Linking Structure

1. Click Depth Hierarchy:
   • Ensure all critical conversion and SEO landing pages reside within $\le 3$ clicks from the root domain.
2. Orphan Pages & Internal PageRank Distribution:
   • Cross-reference sitemap URLs against crawl logs to identify orphaned pages with zero internal inbound links.
   • Optimize anchor text: Replace generic "click here" or "read more" links with descriptive, keyword-rich anchor text.
3. URL Structure & Breadcrumbs:
   • Enforce clean, lowercase, hyphenated URL slugs without trailing query parameters.
   • Implement BreadcrumbList Schema (schema.org/BreadcrumbList) in JSON-LD.

Step 4: On-Page Content, Semantic HTML & Cannibalization

1. Metadata & Heading Structure:
   • Title Tags: Unique, 50–60 characters, containing primary target keyword and brand.
   • Meta Descriptions: 120–155 characters, compelling CTA for search snippet CTR.
   • Single <h1> tag per page matching search intent, followed by hierarchical <h2> and <h3> tags.
2. Keyword Cannibalization Audit:
   • Group pages ranking for identical search queries. Consolidate competing thin pages into a single authoritative pillar page with 301 redirects.
3. Structured Data (JSON-LD):
   • Validate schema implementations using Google's Rich Results Test (SoftwareApplication, Article, FAQPage, Organization).

Deliverable Format: Technical SEO Audit Report (SEO-AUDIT-REPORT.md)

# Technical SEO Audit & Remediation Roadmap: [Domain Name]

## 1. Executive Summary & Crawl Health
- **Total URLs Crawled**: [Count]
- **Indexable URLs**: [Count]
- **Critical P0 Blockers**: [Count] | **High P1 Issues**: [Count] | **Medium P2 Issues**: [Count]
- **Core Web Vitals Pass Rate**: [LCP / INP / CLS status]

## 2. Prioritized Action Roadmap

### [P0 - Critical] Crawl & Indexation Blockers
- **Issue**: [e.g. Rogue noindex tag on product category pages]
- **Impact**: Pages completely dropped from Google index; direct traffic loss.
- **Affected URLs**: [List or pattern]
- **Engineering Fix**: Remove `<meta name="robots" content="noindex">` from `app/layout.tsx`.

### [P1 - High Impact] Architecture & Performance
- **Issue**: [e.g. LCP exceeding 4.2s on blog posts due to unoptimized PNG hero images]
- **Impact**: Fails Core Web Vitals assessment; ranking suppression on mobile.
- **Engineering Fix**: Convert hero images to WebP/AVIF and add `<link rel="preload" as="image">`.

### [P2 - Content & On-Page Polish]
- **Issue**: [e.g. Missing BreadcrumbList JSON-LD schema]
- **Engineering Fix**: Inject structured JSON-LD into head component.

## 3. Keyword Cannibalization Matrix
| Query | Competing URL A | Competing URL B | Recommended Resolution |
|---|---|---|---|
| [Target Keyword] | `/blog/post-1` | `/features/tool` | 301 redirect post-1 to features |

Worked Example: Next.js SaaS SEO Remediation

• Issue: Client’s Next.js marketing site had client-side rendered metadata, causing Googlebot to crawl empty title tags and default meta descriptions.
• Remediation: Migrated page metadata generation to Next.js generateMetadata server-side export. Added self-referencing canonicals and preloaded font assets.
• Result: Core Web Vitals LCP dropped from 3.8s to 1.4s; organic search impressions increased 42% over 8 weeks as indexing refreshed.

Verification Checklist

• robots.txt and meta robots tags verified with zero unintentional noindex directives.
• All sitemap URLs return HTTP 200 and match canonical URL tags.
• Core Web Vitals meet thresholds (LCP $\le 2.5text{s}$, INP $\le 200text{ms}$, CLS $\le 0.1$).
• Critical pages are reachable within $\le 3$ clicks from the homepage.
• All structured data validates without errors on Google Rich Results Test.

Anti-Patterns

• Automated Tool Dumps: Presenting a 200-page automated PDF without triaging findings into prioritized engineering tasks.
• Obsessing Over Vanity Scores: Wasting weeks chasing a 100/100 Lighthouse desktop score while canonical tags remain broken.
• Ignoring Search Intent: Optimizing on-page keywords for informational terms on pages built for high-intent transactional conversion.