Complete guide to migrating your Prismic website to Astro. Leave Prismic's slice machine adds build-step complexity to development behind and get ships zero js to the client by default (islands architecture). Free migration tool included.
You can migrate from Prismic to Astro for free using LeaveWP. Enter your site URL, choose Astro as the destination, and download your content — posts, pages, and media — in minutes. No API keys, passwords, or CLI tools required. Difficulty: Medium. Estimated time: 20-40 minutes.
Official docs: Astro Documentation
Headless CMS with Slice Machine for component-based content. Frontend developers wanting component-based content editing aligned with their code, but these limitations push teams toward modern alternatives.
Slice Machine adds build-step complexity to development
This is the most common reason teams migrate away from Prismic. Astro eliminates this issue entirely.
Custom types have some restrictions compared to Sanity or Contentful
With Astro, ships zero js to the client by default (islands architecture).
Smaller community and fewer third-party tutorials
Modern architectures like Astro are designed to avoid this from the ground up.
Limited webhook and integration options on lower plans
After migrating, you'll no longer need to worry about this — Astro takes a fundamentally different approach.
Content-focused framework that ships zero JavaScript by default. Built with JavaScript/TypeScript (framework-agnostic), it's content-heavy websites that need maximum performance with minimal javascript.
Ships zero JS to the client by default (Islands Architecture)
Use React, Vue, Svelte, or any framework in the same project
Content collections with type-safe Markdown/MDX
Purpose-built for content sites — blogs, docs, marketing pages
Astro is open-source and free to use. You own your code and data with no vendor lock-in. Deploy to any host that supports JavaScript/TypeScript, or use managed platforms like Vercel and Netlify for zero-config deployments.
Side-by-side comparison based on real platform characteristics
| Metric | Prismic | Astro |
|---|---|---|
| Ease of Use | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐ 4/5 |
| Performance | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐⭐ 5/5 |
| Flexibility | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐ 4/5 |
| Cost | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐⭐ 5/5 |
| Scalability | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐ 4/5 |
| Ecosystem | ⭐⭐⭐ 3/5 | ⭐⭐⭐ 3/5 |
| Language | API-based (any frontend) | JavaScript/TypeScript (framework-agnostic) |
| Pricing | Free / $7+/month per user | Free (open-source) |
| Open Source | No | Yes |
Ratings are based on publicly available data, documentation, and community consensus as of 2026. Individual experience may vary.
A detailed breakdown of how your Prismic content maps to Astro
What may need manual attention
Custom server-side logic, third-party integrations, and platform-specific plugins will need equivalent solutions in Astro. The core content (text, images, metadata) transfers cleanly.
Migrate your content in three simple steps
Enter your Prismic site URL — LeaveWP connects automatically.
Select Astro as destination and choose content options.
Download your migrated content or preview it in your browser.
Migrating from Prismic to Astro makes the most sense if you're experiencing slice machine adds build-step complexity to development or outgrowing Prismic's architecture. Astro is best for content-heavy websites that need maximum performance with minimal javascript.
You should migrate if: your Prismic site is slow, your hosting costs are climbing, you need developer flexibility, or you want to adopt a modern JAMstack architecture.
You might want to stay if: your Prismic site benefits from slice machine maps cms slices directly to frontend components and you don't have JavaScript/TypeScript developers on your team. Prismic is genuinely easy to use, and that simplicity has value.
The migration itself is straightforward with LeaveWP — enter your Prismic URL, select Astro, and download your content. The more important question is whether Astro's architecture fits your team's skills and your project's long-term needs.
Explore more migration paths from Prismic or to Astro
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