Astro 7 is here! This release is all about speed. The .astro compiler has been rewritten in Rust. Markdown and MDX processing now runs through a new Rust-powered pipeline. The rendering engine has been replaced with a faster queue-based approach. Together with Vite 8 and its new Rolldown bundler, Astro 7 builds are 15-61% faster in our benchmarks. The fastest build is the one that doesn’t happen at all, so Astro 7 also stabilizes route caching and adds experimental CDN cache providers for Netlify, Vercel, and Cloudflare.
Astro 7 also introduces Advanced Routing, giving you a src/fetch.ts entrypoint with full control over Astro’s request pipeline. For AI-assisted development, Astro can now detect coding agents, run the dev server in the background, and output structured JSON logs when agents need machine-readable feedback.
To upgrade an existing project to Astro 7, use the automated @astrojs/upgrade CLI tool:
See the upgrade guide for detailed migration steps.
Astro 7 upgrades to Vite 8 , the most significant Vite release in years. The headline change: Vite now ships Rolldown , a Rust-based bundler that replaces both esbuild and Rollup with a single, unified bundler. Rolldown is 10-30x faster than Rollup in benchmarks while supporting the same Rollup and Vite plugin APIs.
For Astro users, this means faster builds with no configuration changes for most projects. Vite 8 includes a compatibility layer that auto-converts existing esbuild and rollupOptions configuration to their Rolldown equivalents. If your project uses custom Vite plugins, most of them should continue to work because Rolldown supports the same plugin API as Rollup.