seo-fundamentalslisted
Install: claude install-skill aiskillstore/marketplace
# SEO Fundamentals Review
> "Good SEO is good UX. If search engines can't understand your page, users might not find it."
## When to Apply
Activate this skill when:
- Reviewing HTML `<head>` sections
- Seeing meta tags in code
- Next.js/Remix page components
- HTML structure with headings
- Any page that should be indexed
---
## The SEO Checklist
### Must Have (Every Page)
- [ ] **Title tag** — 50-60 characters, unique per page
- [ ] **Meta description** — 150-160 characters, compelling
- [ ] **Single H1** — One per page, describes main content
- [ ] **Logical heading hierarchy** — H1 → H2 → H3 (no skipping)
- [ ] **Semantic HTML** — `<header>`, `<main>`, `<nav>`, `<article>`, `<footer>`
- [ ] **Image alt text** — Descriptive, not "image1.jpg"
### Should Have (Marketing Pages)
- [ ] **Open Graph tags** — og:title, og:description, og:image
- [ ] **Twitter Card** — twitter:card, twitter:title
- [ ] **Canonical URL** — Prevent duplicate content issues
- [ ] **Structured data** — JSON-LD for rich snippets
### Performance (Affects SEO)
- [ ] **Core Web Vitals awareness**
- LCP (Largest Contentful Paint) < 2.5s
- FID (First Input Delay) < 100ms
- CLS (Cumulative Layout Shift) < 0.1
---
## Common Mistakes (Anti-Patterns)
### 1. Multiple H1 Tags
```html
<!-- ❌ BAD: Multiple H1s confuse search engines -->
<h1>Welcome</h1>
<h1>Our Products</h1>
<h1>Contact Us</h1>
<!-- ✅ GOOD: One H1, logical hierarchy -->
<h1>Welcome to Our Store</h1>
<h2>Our Products</h2>
<h2>Co