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seo-page

Deep single-page SEO analysis covering on-page elements, content quality, technical meta tags, schema, images, and performance. Use when user says "analyze this page", "check page SEO", "single URL", "check this page", "page analysis", or provides a single URL for review.

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balsm-health/website
Works withX (Twitter)

Run score Not tested

See how to install

Files included (2)

  • SKILL.md3.9 KB
  • LICENSE.txt143 B

SKILL.md (original)

Review the instructions the agent will receive before you install.

Single Page Analysis

What to Analyze

On-Page SEO

  • Title tag: 50-60 characters, includes primary keyword, unique
  • Meta description: 150-160 characters, compelling, includes keyword
  • H1: exactly one, matches page intent, includes keyword
  • H2-H6: logical hierarchy (no skipped levels), descriptive
  • URL: short, descriptive, hyphenated, no parameters
  • Internal links: sufficient, relevant anchor text, no orphan pages
  • External links: to authoritative sources, reasonable count

Content Quality

  • Word count vs page type minimums (see quality-gates.md)
  • Readability: Flesch Reading Ease score, grade level
  • Keyword density: natural (1-3%), semantic variations present
  • E-E-A-T signals: author bio, credentials, first-hand experience markers
  • Content freshness: publication date, last updated date

Technical Elements

  • Canonical tag: present, self-referencing or correct
  • Meta robots: index/follow unless intentionally blocked
  • Open Graph: og:title, og:description, og:image, og:url
  • Twitter Card: twitter:card, twitter:title, twitter:description
  • Hreflang: if multi-language, correct implementation

Schema Markup

  • Detect all types (JSON-LD preferred)
  • Validate required properties
  • Identify missing opportunities
  • Never recommend HowTo (deprecated) or FAQ for rich results (retired May 2026); existing FAQPage need not be removed, use QAPage for genuine Q&A

Images

  • Alt text: present, descriptive, includes keywords where natural
  • File size: flag >200KB (warning), >500KB (critical)
  • Format: recommend WebP/AVIF over JPEG/PNG
  • Dimensions: width/height set for CLS prevention
  • Lazy loading: report lazy_method per image (native | perfmatters | ewww | js-generic | none). Do not flag "not lazy-loaded" when JS lazy-loaders (Perfmatters, EWWW, lazysizes) are detected, they intentionally strip the native loading="lazy" attribute and use data-src placeholders

Core Web Vitals (reference only, not measurable from HTML alone)

  • Flag potential LCP issues (huge hero images, render-blocking resources)
  • Flag potential INP issues (heavy JS, no async/defer)
  • Flag potential CLS issues (missing image dimensions, injected content)

Output

Page Score Card

Overall Score: XX/100

On-Page SEO:     XX/100  ████████░░
Content Quality: XX/100  ██████████
Technical:       XX/100  ███████░░░
Schema:          XX/100  █████░░░░░
Images:          XX/100  ████████░░

Issues Found

Organized by priority: Critical -> High -> Medium -> Low

Recommendations

Specific, actionable improvements with expected impact

Schema Suggestions

Ready-to-use JSON-LD code for detected opportunities

DataForSEO Integration (Optional)

If DataForSEO MCP tools are available, use serp_organic_live_advanced for real SERP positions and backlinks_summary for backlink data and spam scores.

Error Handling

ScenarioAction
URL unreachable (DNS failure, connection refused)Report the error clearly. Do not guess page content. Suggest the user verify the URL and try again.
Page requires authentication (401/403)Report that the page is behind authentication. Suggest the user provide the rendered HTML directly or a publicly accessible URL.
JavaScript-rendered content (empty body in HTML)Note that key content may be rendered client-side. Analyze the available HTML and flag that results may be incomplete. Suggest using a browser-rendered snapshot if available.

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