SEO checklist

Cosmo centralizes SEO defaults in src/components/SEO.astro. Edit that file — not individual pages — to change defaults across the site.

Before going live

• Set site in astro.config.mjs to your production URL
• Update siteName and titleDefault defaults in SEO.astro
• Optionally set twitterCreator in SEO.astro to add a global Twitter creator meta tag (or pass it per-page)
• Replace public/placeholder-og-fallback.png with a real OG image (1200×630 recommended)
• Replace src/assets/placeholder-home-hero.png and placeholder-blog-hero.png
• Update sitemap URL in public/robots.txt
• Confirm @astrojs/sitemap runs in your build (it’s wired in astro.config.mjs)
• Verify each page passes a meaningful title and description to BaseLayout
• Optional: extend the auto-generated WebSite JSON-LD schema with page-specific schemas (e.g. BlogPosting) via the <slot name="head"> in BaseLayout

Per-page overrides

Pages override defaults via props on BaseLayout:

<BaseLayout
  title="My post"
  description="A short summary."
  image="/images/custom-og.png"
>

Draft content

Both the blog and docs content collections support a draft field. Mark entries with draft: true in the frontmatter to write without publishing:

---
title: "Work in progress"
draft: true
---

Drafts are automatically filtered from:

• Blog and docs list pages
• Pagination
• RSS feeds
• Sitemap (via built page filtering)
• Tag taxonomy

The rest of your SEO checklist applies to non-draft content only — drafts won’t be indexed or served to users.