Building a blog with Astro content collections

Astro content collections turn a directory of Markdown files into typed, queryable content. Each post keeps its writing and metadata together while templates control presentation.

Typed frontmatter

A collection schema validates titles, descriptions, dates, tags, and publishing state during the build. Invalid content fails early instead of producing an incomplete page.

File-based publishing

Adding a post is straightforward: create a Markdown file, fill in the frontmatter, and write. Dynamic Astro routes generate the final article pages.

One source, many views

The same collection can power the homepage, blog index, tag pages, archive, search index, sitemap, and RSS feed without duplicating post metadata.