SEO fundamentals, E-E-A-T, Core Web Vitals, and Google algorithm principles.
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Principles for search engine visibility.
| Principle | Signals |
|---|---|
| Experience | First-hand knowledge, real examples |
| Expertise | Credentials, depth of knowledge |
| Authoritativeness | Backlinks, mentions, industry recognition |
| Trustworthiness | HTTPS, transparency, accurate info |
| Metric | Target | Measures |
|---|---|---|
| LCP | < 2.5s | Loading performance |
| INP | < 200ms | Interactivity |
| CLS | < 0.1 | Visual stability |
| Element | Purpose |
|---|---|
| XML sitemap | Help crawling |
| robots.txt | Control access |
| Canonical tags | Prevent duplicates |
| HTTPS | Security signal |
| Factor | Impact |
|---|---|
| Page speed | Core Web Vital |
| Mobile-friendly | Ranking factor |
| Clean URLs | Crawlability |
| Element | Best Practice |
|---|---|
| Title tag | 50-60 chars, keyword front |
| Meta description | 150-160 chars, compelling |
| H1 | One per page, main keyword |
| H2-H6 | Logical hierarchy |
| Alt text | Descriptive, not stuffed |
| Factor | Importance |
|---|---|
| Depth | Comprehensive coverage |
| Freshness | Regular updates |
| Uniqueness | Original value |
| Readability | Clear writing |
| Type | Use |
|---|---|
| Article | Blog posts, news |
| Organization | Company info |
| Person | Author profiles |
| FAQPage | Q&A content |
| Product | E-commerce |
| Review | Ratings |
| BreadcrumbList | Navigation |
| ✅ Do | ❌ Don't |
|---|---|
| AI draft + human edit | Publish raw AI content |
| Add original insights | Copy without value |
| Expert review | Skip fact-checking |
| Follow E-E-A-T | Keyword stuffing |
| Priority | Factor |
|---|---|
| 1 | Quality, relevant content |
| 2 | Backlinks from authority sites |
| 3 | Page experience (Core Web Vitals) |
| 4 | Mobile optimization |
| 5 | Technical SEO fundamentals |
| Metric | Tool |
|---|---|
| Rankings | Search Console, Ahrefs |
| Traffic | Analytics |
| Core Web Vitals | PageSpeed Insights |
| Indexing | Search Console |
| Backlinks | Ahrefs, Semrush |
Remember: SEO is a long-term game. Quality content + technical excellence + patience = results.
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概要と使いどころ
Expert in building 3D experiences for the web - Three.js, React Three Fiber, Spline, WebGL, and interactive 3D scenes. Covers product configurators, 3D portfolios, immersive websites, and bringing depth to web experiences. Use when: 3D website, three.js, WebGL, react three fiber, 3D experience.
日本語の概要は準備中です。原文の説明を表示しています。
When the user wants to plan, design, or implement an A/B test or experiment. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," or "hypothesis." For tracking implementation, see analytics-tracking.
日本語の概要は準備中です。原文の説明を表示しています。
Format CVs for academic positions, including publications, grants, teaching, and research experience. Use when the user mentions academic CV, faculty job, tenure-track, postdoc, PhD, research position, or needs to list publications, grants, conferences, or teaching.
日本語の概要は準備中です。原文の説明を表示しています。
Audit and improve web accessibility following WCAG 2.1 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible".
日本語の概要は準備中です。原文の説明を表示しています。
Web accessibility specialist for WCAG compliance, ARIA implementation, and inclusive design. Use when auditing websites for accessibility issues, implementing WCAG 2.1 AA/AAA standards, testing with screen readers, or ensuring ADA compliance. Expert in semantic HTML, keyboard navigation, and assistive technology compatibility.
日本語の概要は準備中です。原文の説明を表示しています。
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
日本語の概要は準備中です。原文の説明を表示しています。