The short version
Bricks is the fastest way to build inside WordPress; Astro is the performance ceiling once you leave WordPress behind. If your site is mostly presentational — product pages, blog posts, marketing pages — and you don’t want PHP rendering plus database queries dragging it down, migrating to Astro takes performance up another notch: from a 95 to a 100, from “fast” to “almost instant.”
That’s not a knock on Bricks. It’s simply that at a certain stage, switching engines is the better deal.
Why migrate? (Three real reasons)
The performance ceiling is different
| Dimension | Bricks (WordPress) | Astro |
|---|---|---|
| Page rendering | PHP server-side rendering + database queries | Pure static HTML generated at build time |
| TTFB | 200–500ms (depends on host) | <50ms (CDN edge) |
| Concurrency | Limited by PHP-FPM | Unlimited (static files) |
| Crash risk | Plugin/theme/DB updates can break things | Practically zero |
The core difference: every WordPress request travels through PHP + MySQL, while an Astro build is just a pile of HTML files sitting on a CDN that the browser fetches directly.
A much smaller attack surface
WordPress is the most-attacked CMS on the planet (plugin vulnerabilities, weak credentials, xmlrpc attacks…). An Astro site has no admin backend, no database, no PHP — the attack surface is nearly zero. For B2B export sites, one less thing that can get hacked is a big deal.
Developer experience and version control
- Astro is code-as-content: the entire site lives in git, so version control is native
- Component-based development (.astro components), highly reusable
- Deploy to Cloudflare Pages / Vercel: push and it’s live, CI/CD fully automatic
When you should not migrate
| Scenario | Recommendation |
|---|---|
| Heavy dynamic interaction (comments, user accounts, live data) | Stay on WordPress (or go SSR) |
| Serious WooCommerce store | Stay on WordPress (WooCommerce migration cost is high) |
| Clients edit content in the admin themselves | Stay on WordPress (headless is a different story) |
| Pure showcase site / blog / marketing pages | Migrate! |
The migration roadmap (5 steps)
Step 1: Inventory your content
- List every page, post, and custom post type
- Decide which are “static showcase” (migratable) and which are “dynamic functionality” (needs rework)
Step 2: Design the Astro structure
- Model content with Astro’s Content Collections
- Componentize the page structure: split Header/Footer/Hero/Section into components
Step 3: Move the content
- Posts/pages: export from WordPress (WXR/JSON) → convert to Markdown → into the Astro content directory
- Images: download from the WP media library → Astro public/images/, mind the paths and lazy loading
- SEO: migrate title/description/canonical/hreflang in full, rebuild sitemap.xml
Step 4: Rebuild the styles
- Bricks’ CSS output can be reused: extract global styles/variables into CSS files
- Rebuild component styles with Tailwind CSS or plain CSS (no need to 1:1 replicate Bricks’ classes)
Step 5: Deploy
- Connect Cloudflare Pages / Vercel to the git repo, push-to-deploy
- Point DNS at the new site, 301 old URLs to the new ones (protect your SEO)
Migration tooling (is there a shortcut?)
- Brixies template library: batch-converts Bricks component JSON into Astro components (the community already has solutions)
- Manual conversion: Bricks’ clean HTML/CSS output makes “copy and adapt” viable
- Bulk posts: script the WXR export → Markdown conversion (a few hundred posts in half an hour)
Practical takeaway: when moving Bricks content to Astro, move structure and content separately — batch the content with scripts, rebuild the structure with components. Don’t chase a 1:1 restoration.
Risk checklist (read before migrating)
| Risk | Mitigation |
|---|---|
| Old URLs die and rankings drop | 301 redirect map, mapped one by one |
| Dynamic features get lost | Inventory before migrating; backfill with APIs or third-party services |
| Clients can’t edit anymore | Headless CMS (see next article) or training |
| Broken image/font paths | Handle uniformly in the migration script; crawl the whole site before launch |
What to expect after migration (realistic numbers)
- TTFB: from ~300ms → 30ms
- PageSpeed: 95 → 100
- Monthly cost: hosting bill can go to $0 (Cloudflare Pages free tier)
- Peace of mind: no more plugin updates breaking the site
Related reading
- Bricks + Headless WordPress: Performance Savior or Headache? (want admin editing and Astro performance? read this one)
- Brixies in action: a batch component conversion tutorial
Migration isn’t “Bricks is inadequate” — it’s “your site has outgrown it.” Content is king, performance is queen, and when WordPress’s complexity stops paying for itself, that’s the moment to move.
