Launch in Days, Not Weeks
Professional one-page website. Only a few slots left this month
Your WordPress site has 47 plugins, takes 4.8 seconds to load on mobile, and your developer charges £180 just to look at it. The case for replatforming is not WordPress hate. It is honest cost arithmetic. Here is how to decide if Astro is the right next stack and how to get there without breaking your traffic.
When WordPress Is Still the Right Answer
This is an honest guide, which means starting with the cases where staying on WordPress is genuinely correct.
High-volume content publishing with non-technical editors. If your site publishes ten posts per week from a team of writers who need a polished editing interface, WordPress’s block editor is hard to beat. The editorial workflow, the media library, and the scheduling features are mature and widely understood.
Plugin-dependent functionality. WooCommerce for ecommerce, LMS plugins for training content, booking systems, complex membership tiers. If your site’s core function is delivered by a plugin with no good equivalent in a static ecosystem, migrating is expensive and risky.
Page builder workflows. If your team uses Elementor, Divi, or Gutenberg’s visual editor to make layout changes without a developer, an Astro migration removes that capability. Layout changes in Astro require a developer. This is a meaningful trade-off for teams that rely on visual editing.
These are not reasons to accept a slow, insecure, expensive WordPress site. They are reasons to be clear-eyed about what the migration costs you, not just what it saves.
When Astro Wins
Marketing sites with infrequent layout changes. The typical B2B service site: homepage, services pages, about, case studies, contact, blog. Content changes frequently; layout changes rarely. This is exactly the use case Astro is optimised for.
Performance-critical pages. Landing pages running paid traffic, product pages, anything where sub-second load times matter commercially. Astro ships near-zero JavaScript by default, scores 90+ on mobile PageSpeed Insights, and deploys to edge locations worldwide on Cloudflare Pages.
Security-sensitive businesses. WordPress’s login page (/wp-admin) is one of the most attacked surfaces on the internet. A static Astro site has no admin interface, no database, and no plugin attack surface. There is nothing to hack at the application layer.
Hosting cost reduction. A typical UK WordPress site on managed hosting (WP Engine, Kinsta, Flywheel) costs £25 to £150 per month. The same site on Cloudflare Pages costs nothing. Over three years, that is £900 to £5,400 in hosting savings.
The Migration Playbook
A WordPress to Astro migration is a build project, not a technical copy-paste. You are rebuilding the site, not porting it. Plan accordingly.
Phase 1: Content audit (1 to 2 days). Export everything from WordPress. List every page with its URL, traffic, and search ranking (use Search Console > Pages sorted by clicks). Identify which pages are worth keeping, which can be merged, and which can be deleted. This audit drives the entire project.
Phase 2: Content modelling (1 day). Define your content types in Astro terms. Blog posts, case studies, service pages, team members. Decide which fields each type needs. This replaces the WordPress Custom Post Types and ACF fields.
Phase 3: Design system (3 to 5 days). Design the components that will be assembled into pages. Homepage, inner page, blog post, case study templates. This is the right time to improve the design, not after launch.
Phase 4: Build (5 to 10 days). Implement the design in Astro. Build components, templates, and pages. Implement the CMS integration if using one. This is where most of the time goes.
Phase 5: Content migration (2 to 4 days). Move content from WordPress to the new structure. Blog posts in Markdown or the new CMS. Images converted to WebP/AVIF. This is often underestimated.
Phase 6: Redirect implementation and QA (1 to 2 days). Map every old URL to its new equivalent. Test all redirects. Check every form. Run accessibility and performance audits.
Phase 7: Launch and monitoring (ongoing). DNS transfer, sitemap submission, analytics verification. Daily Search Console checks for the first two weeks.
Realistic Timeline and Cost
A well-scoped migration for a 20 to 50 page WordPress site typically takes four to eight weeks, depending on content complexity and design decisions. The most common underestimation is content migration: moving 80 blog posts to a new format takes longer than building the blog template.
Project cost range: £3,000 to £8,000 for a professional migration including design, build, and redirect implementation. Lower than that and corners are being cut. Higher than that for a 20-page marketing site suggests scope creep or unnecessary complexity.
The ongoing saving: WordPress managed hosting (£50/month average for a UK SME) becomes £0 on Cloudflare Pages. Developer fees for plugin updates, security patches, and WordPress core updates become a maintenance ticket budget instead of a monthly retainer. Most clients see the migration pay for itself within 18 to 24 months in hosting savings alone.
What You Lose and What You Gain
You lose:
- The WordPress visual editor for layout changes
- The plugin ecosystem for extended functionality
- A widely-understood editing interface that most content managers have used before
- Easy access to freelancers familiar with the platform
You gain:
- Sub-second load times and 90+ PageSpeed scores
- Near-zero hosting costs on Cloudflare Pages
- No admin login to attack, no database to breach
- A codebase that doesn’t accumulate plugin debt over time
- Long-term cost predictability
The trade-off is clearest for businesses where the site is a marketing asset rather than a content platform. If your team publishes daily, the editorial convenience of WordPress is worth the performance cost. If your team edits copy monthly and the site’s job is to convert visitors into leads, the Astro performance advantage is material.
30 Day Post-Launch Monitoring
After a WordPress to Astro migration, monitor these signals for 30 days.
Search Console daily: look for new 404 errors (a redirect is missing) and for impression drops on top queries.
Traffic comparison: compare week-over-week organic sessions. Some volatility in the first four weeks is normal as Google recrawls and re-evaluates.
Conversion tracking: verify all forms submit correctly and all conversion events fire in GA4.
Rankings: check your top 20 keywords weekly. Improvements in PageSpeed Insights scores often produce ranking improvements within four to eight weeks.
If your WordPress site is slow, expensive to maintain, and increasingly insecure, the case for replatforming is usually strong. The question is whether the content editing trade-offs are acceptable for your team’s workflow.
Fernside Studio handles WordPress to Astro migrations as part of our web development service. We run the full migration playbook: content audit, redirect mapping, build, and 30-day post-launch monitoring. Book a replatforming scoping call and we’ll give you an honest view of whether your site is a good candidate and what the project would involve.