AgentSkillsCN

seo-page

深入进行单页 SEO 分析，覆盖页面元素、内容质量、技术元标签、Schema 标记、图片表现，以及性能优化。当用户说“分析这个页面”、“检查页面 SEO”，或提供单一 URL 以供审查时，可使用此功能。

SKILL.md
--- frontmatter
name: seo-page
description: >
  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", or provides a single URL for review.

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 (restricted to gov/health)

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: loading="lazy" on below-fold images

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

code
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