fusengine Does not cover locale routing mechanics beyond hreflang tag generation (astro-i18n), Content Layer schema design (astro-content), or image-specific optimization like <Image />/<Picture /> (astro-assets) — those are separate skills.
Astro SEO
Complete SEO strategy for Astro 7 sites — zero JS by default makes Astro naturally SEO-friendly.
Agent Workflow (MANDATORY)
Before ANY implementation, use TeamCreate to spawn 3 agents:
- explore-codebase - Analyze existing layouts, head components, and metadata
- research-expert - Verify latest SEO best practices via Context7/Exa
- mcp__context7__query-docs - Check Astro 7 sitemap/RSS integration docs
After implementation, run sniper for validation.
Overview
When to Use
- Adding meta tags and Open Graph to any Astro page
- Generating JSON-LD structured data for rich snippets
- Setting up @astrojs/sitemap for search indexing
- Configuring RSS feeds with @astrojs/rss
- Creating robots.txt and canonical URL patterns
- Adding hreflang for multilingual SEO
- Measuring and improving Core Web Vitals
Why Astro for SEO
| Feature | Benefit |
|---|---|
| Zero JS by default | Pure HTML for crawlers, instant indexing |
| Static output | Sub-second TTFB, top Core Web Vitals |
Astro.site |
Canonical URL construction built-in |
| Islands Architecture | Only hydrate interactive parts |
Core Concepts
Head Component Pattern
Create a reusable <SEO /> or <Head /> component accepting title, description, og, canonical props. Place in all layouts. Use Astro.site for absolute URL construction.
Canonical URLs
Always construct canonicals with Astro.site:
const canonical = new URL(Astro.url.pathname, Astro.site);
Structured Data
Inject JSON-LD via <script type="application/ld+json" set:html={JSON.stringify(schema)} />. Use set:html to avoid XSS — never template string interpolation.
Reference Guide
Concepts
| Topic | Reference | When to Consult |
|---|---|---|
| Meta Tags & OG | meta-tags.md | Setting up head metadata |
| JSON-LD | structured-data.md | Rich snippets, schema.org |
| Sitemap & RSS | sitemap-rss.md | Search indexing, feeds |
| Canonical & hreflang | canonical-hreflang.md | Duplicate content, i18n |
| Core Web Vitals | core-web-vitals.md | LCP, CLS, FID optimization |
Templates
| Template | When to Use |
|---|---|
| seo-head.md | Reusable SEO head component |
| json-ld.md | JSON-LD BlogPosting, WebSite schemas |
Best Practices
- One Head component - Centralize all meta in a reusable component
- Absolute URLs - Use
Astro.sitefor og:image and canonicals set:htmlfor JSON-LD - Prevents XSS vulnerabilities- sitemap + robots.txt - Always configure both for crawlability
- hreflang on all locales - Include x-default for language variants