Building a Zero-Cost Blog with Astro, Sveltia CMS & Cloudflare Pages

Why This Stack?

I wanted a blog for technical docs and images with these constraints:

• $0/month — no VPS, no database, no hosting fees
• Markdown — all content in portable .md files
• WebP images — auto-converted for performance
• CMS — edit from any browser, no local tooling needed after setup
• Global CDN — fast everywhere via Cloudflare

The Architecture

GitHub Repo (storage + CMS backend)
├── content/posts/       ← Markdown technical docs
├── content/images/      ← WebP images (auto-converted)
├── public/admin/        ← Sveltia CMS (one HTML file)
└── src/                 ← Astro site source
         │
         ▼
Cloudflare Pages (build + CDN)
         │
         ▼
    yourdomain.com