Migrating from WordPress to Astro: when and how

Many companies sit on WordPress without it still matching what they need: a fast, secure, findable site. Migrating to Astro can make sense then, but it is not a button you press. A sloppy migration costs you rankings; a good migration keeps them and delivers a faster site. Below you can read when switching pays off, how to do it step by step, and when you are better off staying put.

When does migrating pay off?

Switching is interesting above all for content-focused sites: marketing sites, blogs, documentation and company sites. A few clear signals that a migration is worth the effort:

• your site is slow and plugins keep piling up;
• you spend a lot of attention and money on maintenance and security;
• you want better Core Web Vitals and stronger findability;
• your content does not change every hour through ten different editors;
• you have been hit by a hacked plugin or a slow backend.

If you recognise your site in those, the gain, speed, security and lower maintenance, is often real. The trade-off is set out in detail in Astro vs WordPress.

The steps, in broad outline

A tidy migration follows a fixed path. Do not skip any step, especially not the redirects.

1. Take stock of your URLs. Make a list of every existing page, with their traffic and positions. This is the basis for your redirect plan.
2. Export your content. Posts and pages become Markdown or move to a headless CMS. You bring images and metadata along.
3. Capture a schema. In Astro your content gets a schema (via Content Collections) that catches errors during the build, not only in production.
4. Build the site in Astro. Static pages where you can, server rendering where you must, and interaction through islands.
5. Keep or redirect your URLs. Every old URL that changes gets a 301 redirect to the new path. Never wholesale to the homepage.
6. Only go live after a check. Verify redirects, metadata, sitemap and the most important pages before you switch the DNS.

Keep your SEO safe

The biggest fear in a migration is loss of rankings. That is largely avoidable. The key is your URL structure: keep it where possible, and otherwise set up 301 redirects from old to new. A 301 passes on the link value you have built up, so a page that ranked for years keeps scoring at its new address.

Also pay attention to:

• Metadata: bring titles, meta descriptions and canonical tags along.
• Structured data: set up your schema markup (such as Article or FAQPage) again.
• Sitemap and robots: provide a new sitemap and submit it via Search Console.
• Internal links: update them to the new paths.

Fast, semantic HTML, the starting point of Astro, helps after the migration rather than harms it. Why speed counts you can read in Core Web Vitals and SEO.

Can you keep WordPress as your CMS?

Yes, and for many teams that is the gentlest switch. With headless WordPress you keep the familiar WordPress editor as a content source, while Astro builds and serves the public site. Editors notice little difference in their daily work, but visitors get a much faster site. You then migrate the presentation, not the management, which makes change management a good deal simpler.

When are you better off staying on WordPress?

WordPress is not the most used CMS in the world for nothing (41.5% of all websites, W3Techs, June 2026). Stay where you are if:

• editors publish themselves every day in a familiar editor with instant preview;
• you lean on an ecosystem such as WooCommerce, membership management or a specific plugin;
• you have a large editorial team with roles and permissions;
• the cost of migrating does not outweigh the gain.

An honest trade-off is better than a migration on principle. Sometimes a well cleaned-up, faster WordPress site is the pragmatic choice.

Common mistakes

• Redirecting everything to the homepage. This destroys your link value; redirect page to page.
• Forgetting the sitemap. Without a fresh sitemap, reindexing takes longer.
• Copying content blindly. A migration is the ideal moment to improve or merge weak pages.
• Going live without a check. Test redirects and metadata in a staging environment before the DNS switch.

Conclusion

Migrating from WordPress to Astro is an investment that pays off in speed, security and lower maintenance, provided your site benefits from it and you preserve your URLs carefully. For anyone who finds the switch too big, headless WordPress is an intermediate step that keeps the ease of management. Not sure whether your site is a good candidate? Then read the Astro vs WordPress comparison or look at why Astro is fast by design.