on-page-seo-auditor

name	on-page-seo-auditor
description	Use when the user asks to "audit page SEO", "on-page SEO check", "SEO score", "page optimization", "what SEO issues does this page have", "what is wrong with this page SEO", "score my page", or "why is this page not ranking". Performs comprehensive on-page SEO audits to identify optimization opportunities including title tags, meta descriptions, headers, content quality, internal linking, and image optimization. For server, speed, and crawl issues, see technical-seo-checker. For full EEAT content quality scoring, see content-quality-auditor.
license	Apache-2.0
metadata	{"author":"aaron-he-zhu","version":"2.0.0","geo-relevance":"medium","tags":["seo","on-page audit","page optimization","seo audit","content optimization","header tags","image optimization","seo score"],"triggers":["audit page SEO","on-page SEO check","SEO score","page optimization","what SEO issues","check my page","on-page audit","what's wrong with this page's SEO","score my page","why isn't this page ranking"]}

On-Page SEO Auditor

SEO & GEO Skills Library · 20 skills for SEO + GEO · Install all: npx skills add aaron-he-zhu/seo-geo-claude-skills

Browse all 20 skills

Research · keyword-research · competitor-analysis · serp-analysis · content-gap-analysis

Build · seo-content-writer · geo-content-optimizer · meta-tags-optimizer · schema-markup-generator

Optimize · on-page-seo-auditor · technical-seo-checker · internal-linking-optimizer · content-refresher

Monitor · rank-tracker · backlink-analyzer · performance-reporter · alert-manager

Cross-cutting · content-quality-auditor · domain-authority-auditor · entity-optimizer · memory-management

This skill performs detailed on-page SEO audits to identify issues and optimization opportunities. It analyzes all on-page elements that affect search rankings and provides actionable recommendations.

When to Use This Skill

• Auditing pages before or after publishing
• Identifying why a page isn't ranking well
• Optimizing existing content for better performance
• Creating pre-publish SEO checklists
• Comparing your on-page SEO to competitors
• Systematic site-wide SEO improvements
• Training team members on SEO best practices

What This Skill Does

1. Title Tag Analysis: Evaluates title optimization and CTR potential
2. Meta Description Review: Checks description quality and length
3. Header Structure Audit: Analyzes H1-H6 hierarchy
4. Content Quality Assessment: Reviews content depth and optimization
5. Keyword Usage Analysis: Checks keyword placement and density
6. Internal Link Review: Evaluates internal linking structure
7. Image Optimization Check: Audits alt text and file optimization
8. Technical On-Page Review: Checks URL, canonical, and mobile factors

How to Use

Audit a Single Page

Audit the on-page SEO of [URL]

Check SEO issues on this page targeting [keyword]: [URL/content]

Compare Against Competitors

Compare on-page SEO of [your URL] vs [competitor URL] for [keyword]

Audit Content Before Publishing

Pre-publish SEO audit for this content targeting [keyword]: [content]

Data Sources

See CONNECTORS.md for tool category placeholders.

With ~~SEO tool + ~~web crawler connected: Claude can automatically pull page HTML via ~~web crawler, fetch keyword search volume and difficulty from ~~SEO tool, retrieve click-through rate data from ~~search console, and download competitor pages for comparison. This enables fully automated audits with live data.

With manual data only: Ask the user to provide:

1. Page URL or complete HTML content
2. Target primary and secondary keywords
3. Competitor page URLs for comparison (optional)

Proceed with the full audit using provided data. Note in the output which findings are from automated crawl vs. manual review.

Instructions

When a user requests an on-page SEO audit:

1. Gather Page Information

   ### Audit Setup
   
   **Page URL**: [URL]
   **Target Keyword**: [primary keyword]
   **Secondary Keywords**: [additional keywords]
   **Page Type**: [blog/product/landing/service]
   **Business Goal**: [traffic/conversions/authority]
   

2. Audit Title Tag

   ## Title Tag Analysis
   
   **Current Title**: [title]
   **Character Count**: [X] characters
   
   | Criterion | Status | Notes |
   |-----------|--------|-------|
   | Length (50-60 chars) | ✅/⚠️/❌ | [notes] |
   | Keyword included | ✅/⚠️/❌ | Position: [front/middle/end] |
   | Keyword at front | ✅/⚠️/❌ | [notes] |
   | Unique across site | ✅/⚠️/❌ | [notes] |
   | Compelling/clickable | ✅/⚠️/❌ | [notes] |
   | Matches intent | ✅/⚠️/❌ | [notes] |
   
   **Title Score**: [X]/10
   
   **Issues Found**:
   - [Issue 1]
   - [Issue 2]
   
   **Recommended Title**:
   "[Optimized title suggestion]"
   
   **Why**: [Explanation of improvements]
   

3. Audit Meta Description

   ## Meta Description Analysis
   
   **Current Description**: [description]
   **Character Count**: [X] characters
   
   | Criterion | Status | Notes |
   |-----------|--------|-------|
   | Length (150-160 chars) | ✅/⚠️/❌ | [notes] |
   | Keyword included | ✅/⚠️/❌ | [notes] |
   | Call-to-action present | ✅/⚠️/❌ | [notes] |
   | Unique across site | ✅/⚠️/❌ | [notes] |
   | Accurately describes page | ✅/⚠️/❌ | [notes] |
   | Compelling copy | ✅/⚠️/❌ | [notes] |
   
   **Description Score**: [X]/10
   
   **Issues Found**:
   - [Issue 1]
   
   **Recommended Description**:
   "[Optimized description suggestion]" ([X] chars)
   

4. Audit Header Structure

   ## Header Structure Analysis
   
   ### Current Header Hierarchy
   
   

   H1: [H1 text] H2: [H2 text] H3: [H3 text] H3: [H3 text] H2: [H2 text] H3: [H3 text] H2: [H2 text]

Validation Checkpoints

Input Validation

• Target keyword(s) clearly specified by user
• Page content accessible (either via URL or provided HTML)
• If competitor comparison requested, competitor URL provided

Output Validation

• Every recommendation cites specific data points (not generic advice)
• Scores based on measurable criteria, not subjective opinion
• All suggested changes include specific locations (title tag, H2 #3, paragraph 5, etc.)
• Source of each data point clearly stated (~~SEO tool data, user-provided, ~~web crawler, or manual review)

Example

User: "Audit the on-page SEO of https://example.com/best-noise-cancelling-headphones targeting 'best noise cancelling headphones'"

Output:

# On-Page SEO Audit Report

**Page**: https://example.com/best-noise-cancelling-headphones
**Target Keyword**: best noise cancelling headphones
**Secondary Keywords**: wireless noise cancelling headphones, ANC headphones, noise cancelling headphones review
**Page Type**: commercial (reviews/roundup)
**Audit Date**: 2025-01-15

## Summary

| Audit Area | Score | Key Finding |
|------------|-------|-------------|
| Title Tag | 8/10 | Good keyword placement; slightly long at 63 chars |
| Meta Description | 6/10 | Missing CTA; keyword present but generic copy |
| Header Structure | 9/10 | Clean hierarchy; H2s cover all major products |
| Content Quality | 7/10 | 2,400 words is solid; lacks original test data |
| Keyword Optimization | 8/10 | Strong placement; density at 1.2% is healthy |
| Internal Links | 5/10 | Only 2 internal links; missing links to brand pages |
| Images | 6/10 | 3/8 images missing alt text; no WebP format |
| Technical Elements | 7/10 | Missing Product schema; good URL and mobile |

## Overall Score: 71/100

Calculation: (8x0.15 + 6x0.05 + 9x0.10 + 7x0.25 + 8x0.15 + 5x0.10 + 6x0.10 + 7x0.10) x 10 = 71

Score Breakdown:
████████░░ Title Tag:        8/10  (15%)
██████░░░░ Meta Description: 6/10  ( 5%)
█████████░ Headers:          9/10  (10%)
███████░░░ Content:          7/10  (25%)
████████░░ Keywords:         8/10  (15%)
█████░░░░░ Internal Links:   5/10  (10%)
██████░░░░ Images:           6/10  (10%)
███████░░░ Technical:        7/10  (10%)

## Priority Issues

### Critical
1. **Internal linking severely underdeveloped** — Only 2 internal links found. Add links to individual headphone review pages (/sony-wh1000xm5-review, /bose-qc-ultra-review) and the headphones category page. Target 5-8 contextual internal links.
2. **3 product images missing alt text** — Images for Sony WH-1000XM5, Bose QC Ultra, and Apple AirPods Max have empty alt attributes. Each missing alt tag is a lost ranking signal in Google Images.

### Important
1. **Meta description lacks call-to-action** — Current description states facts but does not compel clicks. Add "Compare prices and features" or "See our top picks" to drive CTR.

## Quick Wins

1. **Add alt text to 3 images** (5 min) — Use descriptive text like "Sony WH-1000XM5 noise cancelling headphones on desk" instead of empty attributes.
  (5 min) — Change to: "Compare the 10 best noise cancelling headphones for 2025. Expert-tested picks from Sony, Bose, and Apple with pros, cons, and pricing. See our top picks."
  (10 min) — Link product names to their individual review pages and add a "See all headphones" link to the category hub.

Audit Checklists by Page Type

Blog Post Checklist

- [ ] Title includes keyword and is compelling
- [ ] Meta description has keyword and CTA
- [ ] Single H1 with keyword
- [ ] H2s cover main topics
- [ ] Keyword in first 100 words
- [ ] 1,500+ words for competitive topics
- [ ] 3+ internal links with varied anchors
- [ ] Images with descriptive alt text
- [ ] FAQ section with schema
- [ ] Author bio with credentials

Product Page Checklist

- [ ] Product name in title
- [ ] Price and availability in description
- [ ] H1 is product name
- [ ] Product features in H2s
- [ ] Multiple product images with alt text
- [ ] Customer reviews visible
- [ ] Product schema implemented
- [ ] Related products linked
- [ ] Clear CTA button

Landing Page Checklist

- [ ] Keyword-optimized title
- [ ] Benefit-focused meta description
- [ ] Clear H1 value proposition
- [ ] Supporting H2 sections
- [ ] Trust signals (testimonials, logos)
- [ ] Single clear CTA
- [ ] Fast page load speed
- [ ] Mobile-optimized layout

Tips for Success

1. Prioritize issues by impact - Fix critical issues first
2. Compare to competitors - See what's working for top rankings
3. Balance optimization and readability - Don't over-optimize
4. Audit regularly - Content degrades over time
5. Test changes - Track ranking changes after updates

Scoring Rubric

Section Weight Distribution

Audit Section	Weight	Max Score	Rationale
Title Tag	15%	15	Strongest single ranking signal
Meta Description	5%	5	CTR impact, not direct ranking factor
Header Structure	10%	10	Content organization, semantic signals
Content Quality	25%	25	Strongest holistic ranking factor
Keyword Optimization	15%	15	Relevance signals
Internal/External Links	10%	10	Authority flow, context signals
Image Optimization	10%	10	Accessibility + image search opportunity
Page-Level Technical	10%	10	Core Web Vitals, mobile, security

Scoring Scale per Factor

Score	Meaning	Action Required
10/10	Excellent — follows all best practices	None
7-9/10	Good — minor improvements possible	Optional optimization
4-6/10	Needs work — notable issues	Fix within this week
1-3/10	Poor — significant problems	Fix immediately (Critical)
0/10	Missing or broken	Fix immediately (Blocking)

Scoring Conversion Formula

Each section is scored out of 10, then converted to the 100-point overall score using section weights:

Overall Score = Sum of (section_score x section_weight) x 10

Where section weights are: Title 0.15, Meta 0.05, Headers 0.10, Content 0.25, Keywords 0.15, Links 0.10, Images 0.10, Technical 0.10.

Worked example:

Section	Score /10	Weight	Weighted
Title Tag	8	0.15	1.20
Meta Description	6	0.05	0.30
Header Structure	9	0.10	0.90
Content Quality	7	0.25	1.75
Keyword Optimization	8	0.15	1.20
Internal/External Links	5	0.10	0.50
Image Optimization	6	0.10	0.60
Page-Level Technical	7	0.10	0.70
Total		1.00	7.15

Overall Score = 7.15 x 10 = 71 / 100

Common Issue Resolution Playbook

Title Tag Issues

Issue	Impact	Quick Fix Template
Missing title	Critical	Add: "[Primary Keyword]: [Benefit]
Too long (>60 chars)	Medium	Shorten: move brand to end, remove filler words
Too short (<30 chars)	Medium	Expand: add modifier, benefit, or year
Missing keyword	High	Rewrite to include primary keyword in first half
Duplicate title	High	Make each page title unique; add page-specific modifier

Meta Description Issues

Issue	Impact	Quick Fix Template
Missing description	Medium	Write: "[What this page covers]. [Key benefit]. [CTA]." (150-160 chars)
Too long (>160 chars)	Low	Trim from end; ensure core message fits in 150 chars
Missing keyword	Low	Naturally incorporate primary keyword
No CTA	Low	Add: "Learn more", "Discover", "Find out", "Get started"
Duplicated across pages	Medium	Write unique description for each page

Header Issues

Issue	Impact	Quick Fix
Missing H1	Critical	Add one H1 per page containing primary keyword
Multiple H1s	High	Keep one H1, convert others to H2
Skipped heading levels	Medium	Use sequential hierarchy: H1→H2→H3
Headers not descriptive	Medium	Rewrite to include keyword variations
No H2s (single long block)	Medium	Break content into sections with descriptive H2s every 200-300 words

Content Issues

Issue	Impact	Quick Fix
Thin content (<300 words)	Critical	Expand with subtopics, FAQ, examples
Keyword stuffing (>3%)	High	Reduce usage, use synonyms and related terms
No structured data	Medium	Add relevant schema (FAQ, HowTo, Article)
Missing internal links	Medium	Add 3-5 contextual internal links
No images	Low	Add 2-3 relevant images with alt text

Industry Benchmark Data

Content Length Benchmarks by Query Type

Query Type	Top 10 Average Word Count	Recommended Minimum
Informational (guides)	2,200 words	1,500 words
Commercial (reviews)	1,800 words	1,200 words
Transactional (product)	800 words	500 words
Local (service pages)	600 words	400 words
Definition queries	1,200 words	800 words

Page Speed Benchmarks

Metric	Good	Needs Improvement	Poor
LCP	≤2.5s	2.5-4.0s	>4.0s
FID/INP	≤100ms/200ms	100-300ms	>300ms
CLS	≤0.1	0.1-0.25	>0.25
TTFB	≤800ms	800-1800ms	>1800ms

Reference Materials

• Scoring Rubric — Detailed scoring criteria, weight distribution, and grade boundaries for on-page audits

Related Skills

• seo-content-writer — Create optimized content
• technical-seo-checker — Technical SEO audit
• meta-tags-optimizer — Optimize meta tags
• serp-analysis — SERP context for audit findings
• content-refresher — Update existing content
• content-quality-auditor — Full 80-item CORE-EEAT audit
• internal-linking-optimizer — Optimize internal link structure
• schema-markup-generator — Validate and generate schema markup