Astro for content-heavy sites (blogs, docs, marketing pages) where performance is king. Next.js for interactive web apps, dashboards, and full-stack applications.
Side-by-side
| Next.js | Astro | |
|---|---|---|
| Best for | Full-stack apps, interactive UIs | Content sites, blogs, docs |
| JS shipped | Full React bundle | Zero by default |
| Rendering | SSR, SSG, CSR | SSG (+ optional SSR) |
| Framework | React only | Any (React, Vue, Svelte, none) |
| API routes | Built-in | Via adapters |
| Learning curve | Medium | Easy |
| Performance | Good | Excellent |
| Content | MDX support | Built-in content collections |
The key difference
Next.js ships React to the browser. Even a static “About” page includes the React runtime (~40 KB). Your page is interactive by default.
Astro ships zero JavaScript by default. A static page is pure HTML. You opt into interactivity per-component with client: directives. Only the components that need JavaScript get it.
For a blog with 200 pages, this difference is massive. Astro pages load in milliseconds.
When to use Astro
- Blogs and content sites
- Documentation sites
- Marketing and landing pages
- Portfolio sites
- Any site where most pages are static content
- When you want the fastest possible page loads
When to use Next.js
- Web applications with lots of interactivity
- Dashboards and admin panels
- E-commerce with dynamic features
- Apps that need authentication and server-side logic
- When your team already knows React
- When you need API routes in the same project
Can you use both?
Yes. A common pattern: Astro for the marketing site and blog, Next.js for the app/dashboard. Different tools for different jobs.
This site (aimadetools.com) uses Astro — it’s a content site with 200+ pages, and performance matters more than interactivity.
See also: Astro cheat sheet | Next.js cheat sheet | What is Astro? | What is Next.js?