Moving to WordPress from another platform is the right call for a lot of businesses — better technical SEO controls, genuine data ownership, and a plugin ecosystem that covers almost any feature requirement without enterprise pricing. The part that makes people hesitant is everything you could lose in the process: search rankings built over years, internal link structures, image paths, form configurations, user data.
This guide covers the migration process with the specific tools and steps that protect what you’ve built, whether you’re moving from Wix, Squarespace, or a custom-built CMS.
Why businesses migrate to WordPress
Platforms like Wix and Squarespace are sensible starting points. They remove the hosting and setup overhead and get a site live quickly. The tradeoffs become significant at scale: limited control over server-level caching, no way to modify the database schema, plugin ecosystems that are small compared to WordPress’s 60,000+ options, and proprietary code that belongs to the platform, not to you.
The ownership argument is the most significant. A site built on Wix is a site built on Wix’s infrastructure, under Wix’s pricing, exportable only to the degree Wix allows. With WordPress, you own the codebase, the database, and the hosting relationship. Platform pricing changes, feature restrictions, or company acquisitions don’t hold your business hostage.
Technical SEO is the other frequent driver. WordPress gives you direct access to server-side caching configurations, the ability to implement custom schema markup, granular URL structure control, and complete flexibility over how meta data is generated. Custom CMS setups and proprietary builders rarely offer the same depth of control, particularly for sites that rely on structured data or need multilingual support.
What breaks during a migration — and how to prevent it
URL structure changes. Most platforms use different URL formats than WordPress. If your old site had domain.com/about-us.html and the new one uses domain.com/about-us/, every inbound link and indexed URL pointing to the old path now returns a 404. Without 301 redirects mapping every old URL to its WordPress equivalent, your organic traffic and search rankings drop alongside your crawl coverage in Google Search Console.
Missing or broken content. Automated export tools rarely capture everything cleanly. Images hosted on the old platform’s CDN, embedded from external services, or referenced in CSS don’t automatically transfer to the WordPress media library. Internal links baked into page content still point to old URL patterns. A post-migration crawl with Screaming Frog catches these before users encounter them — after going live, a crawl of the new domain identifies any remaining 404s and broken image references.
Database integrity and downtime. Moving a live site without a staging environment running in parallel creates a window where the site may be inaccessible. If the database transfer fails or the content export is corrupted without the original site intact as a fallback, data recovery becomes expensive. Always migrate to a staging environment first; cut over to the live domain only when the staging copy is fully verified. See how to create a WordPress staging site for the setup process.
Pre-migration audit: before touching anything
Crawl your existing site with Screaming Frog before migration starts (the free tier covers up to 500 URLs). Export the complete URL list — every page, post, and media URL that currently exists on your domain. This list becomes your redirect map. Every URL in it needs either a 301 redirect to its WordPress equivalent, or a confirmed match if the slug stays the same in WordPress.
Export your Google Search Console data for the current domain — specifically, which pages are indexed and which have inbound links or impressions. These are the URLs where a missed redirect is most costly. Screenshot or export the GSC Coverage report as a pre-migration baseline to compare against after launch.
Document any custom functionality: form integrations (Mailchimp, HubSpot, Zoho), payment gateways, API connections, booking systems, membership access logic. These need to be recreated or replaced on the WordPress installation before go-live — they don’t transfer automatically regardless of platform.
Platform-specific migration paths
Wix to WordPress
Wix does not provide a full site export. Blog posts can be exported via the Wix RSS feed and imported into WordPress using WP All Import or the built-in RSS importer. Pages and design cannot be exported — they need to be rebuilt in WordPress.
This means a Wix migration is always partly a rebuild. The content migrates; the design doesn’t. Wix URL structures use different path formats from WordPress, so 301 redirects are required for every page. Typical timeline is 1–2 weeks for a site under 50 pages, depending on design complexity. For anything with significant organic traffic, professional handling of the redirect map is where the risk is concentrated — a missed redirect on a ranking page costs more to recover than the migration itself.
Squarespace to WordPress
Squarespace provides a WordPress export via Settings → Export → WordPress. The XML file contains your blog posts and pages in a format WordPress can import directly using the WordPress Importer plugin. Images transfer with the content, though large media libraries sometimes need manual cleanup after import.
Squarespace URL structures are generally cleaner to redirect than Wix’s, and the export fidelity is better. Plan for post-import formatting cleanup — Squarespace’s block-based layout doesn’t always translate cleanly to WordPress editor HTML. Typical timeline: 1–3 weeks depending on content volume. If the site runs Squarespace Commerce, product data needs a separate export and import via WooCommerce’s CSV importer.
Custom CMS or proprietary PHP application
Custom-built systems require a database-level migration. The approach is to map your existing content tables to WordPress post types — using WordPress’s custom post types to preserve the structure of custom data rather than flattening everything into standard posts.
WP All Import handles CSV and XML imports with visual field mapping. For relational data — user records, transaction histories, taxonomy relationships — a custom migration script is usually faster and more reliable than general-purpose tools. These require decisions about data architecture before migration starts: what maps to which WordPress structure, and what gets normalised during the move.
Typical timeline: 3–4 weeks for complex architectures. Proprietary systems with unusual database schemas or undocumented custom tables can extend this significantly.
The migration process: step by step
1. Build on staging, not live. Set up the WordPress installation on a staging domain or subdomain. Configure SSL, set the permalink structure to /%postname%/, and install Rank Math before importing content.
2. Import content. Use the method appropriate for your platform: WordPress Importer for Squarespace XML exports, WP All Import for CSV or custom XML from other systems, manual reconstruction for Wix pages.
3. Rebuild the design. Wix and Squarespace designs don’t export. Build the WordPress equivalent using a lightweight custom theme or a page builder. This is the step that takes the most calendar time on visual-first migrations.
4. Build and implement 301 redirects. Using your Screaming Frog URL export, map every old URL to its new WordPress equivalent. Install the Redirection plugin and enter each redirect before go-live. Test a sample of redirects against the staging domain with Screaming Frog’s redirect checker.
5. Restore SEO metadata. Recreate meta titles, descriptions, heading structures (H1, H2, H3), image alt text, and any schema markup. Rank Math’s migration assistant can import from Yoast if the previous site was also WordPress. For a new WordPress install, metadata must be entered or imported from the old site’s data.
6. Test staging end-to-end. All forms, navigation, internal links, and redirects. Run Screaming Frog against the staging URL to catch remaining 404s and broken image references before touching the live domain.
7. Lower DNS TTL and cut over. Lower DNS TTL to 300 seconds (5 minutes) 24–48 hours before cutover. After pointing DNS to the new hosting, flush Cloudflare cache if applicable, verify redirects are firing, submit the new sitemap in Google Search Console, and run PageSpeed Insights against the live domain for a performance baseline.
For the full technical go-live verification sequence a developer should run after DNS cutover, the advanced WordPress launch checklist covers wp-config.php, database verification, caching and security headers in detail.
SEO preservation: the non-negotiable steps
The redirect map is the most important deliverable of a migration. A missed redirect on a page with inbound links or GSC impressions costs organic traffic directly — the damage is proportional to how much authority that URL had, and it persists until Googlebot recrawls the new redirect (which can take weeks). Build the redirect map before the new site goes live, not as a post-launch patch.
After redirects, verify Rank Math’s configuration across the new site. Check that meta titles and descriptions are populated for all migrated pages. Confirm Open Graph tags are generating correctly — paste key URLs into opengraph.xyz to verify social preview data. Confirm the XML sitemap is submitting correctly in GSC → Sitemaps and returning a 200 status.
Two weeks after launch, review the GSC Coverage report. “Crawled — currently not indexed” warrants investigation for migrated pages, as it often indicates thin content or a duplicate content issue introduced during migration. “Not found (404)” listings confirm missed redirects — add those immediately. Rankings typically stabilise within 4–8 weeks for a clean migration; significant drops beyond that usually indicate missed redirects or content quality issues rather than a technical SEO penalty from the platform change itself.
After the migration: verification checklist
Before considering the migration complete:
- Screaming Frog crawl of the live domain — any 404s are missed redirects or broken internal links that need fixing
- PageSpeed Insights on at least the homepage and one category or product page — this is the performance baseline going forward
- GSC Coverage: the “Valid” count should approach your pre-migration page count; new “Not found” entries need redirects added
- All contact forms, booking systems, and checkout flows tested end-to-end from a real email address
- SSL verified for both www and non-www variants, with correct redirects between them
- Staging environment blocked from GSC indexing (remove the property or disallow in robots.txt) to prevent dual indexing of staging and production content
If something goes wrong post-migration — database corruption, a plugin conflict on the new install, or WooCommerce checkout errors — the emergency rescue service handles post-migration breakages that go beyond a configuration fix.
For the full picture of what hosting, plugin updates, backup schedules and performance monitoring look like after a migration lands, the WordPress maintenance guide covers the recurring tasks and their correct frequency. When you’re ready to move your site, the WordPress migration service handles the full process — URL audit, content transfer, redirect implementation, SEO restoration, and go-live verification — at a fixed project price.
For host-to-host moves or WordPress-to-WordPress migrations (e.g. changing hosting providers after the initial platform migration), the complete WordPress migration guide covers those scenarios in detail.
