Astro Content Collections Tutorial for SEO Blogs

Why this matters

Content Collections turn Markdown files into structured content with validation. That matters for SEO sites because a broken frontmatter field can quietly break archive pages, metadata, or feeds.

Setup

Put posts inside src/content/posts/ and validate them with Zod in src/content/config.ts.

const posts = defineCollection({
  type: "content",
  schema: z.object({
    title: z.string(),
    description: z.string(),
    pubDate: z.coerce.date()
  })
});

Implementation notes

Use categories and tags in the schema from day one. That will make category pages and tag pages trivial to generate later. Pair this with the archive structure in Astro Blog SEO Tutorial.

Final checklist

• Validate all required frontmatter
• Keep category names consistent
• Use content collections before writing custom loaders