How to Migrate a WordPress Site to a New Host (Without Downtime)

Migrating a WordPress site sounds scary, but it's really just moving two things — your files and your database — and then pointing your domain at the new server. Done in the right order, visitors never see a second of downtime. Here's the safe way.

The two things you're actually moving

A WordPress site is just two parts: the files (WordPress core, your theme, plugins and uploads, all under one folder) and the database (your posts, pages, settings and users). Migrating means copying both to the new host, reconnecting them, testing, and only then switching your domain over.

Option A: let a plugin do it

For most sites, a migration plugin is the easiest route. Tools like Duplicator, All-in-One WP Migration or Migrate Guru package your files and database into one archive that you restore on the new host. This is the recommended path if you're not comfortable with FTP and databases.

Option B: migrate manually (more control)

If you prefer to do it by hand — or the site is too big for a plugin — the steps are:

• Back up everything first. Download all files over SFTP and export the database from phpMyAdmin. Don't skip this.
• Copy the files to the new host over SFTP, into the web root.
• Import the database — create a fresh database on the new host and import your SQL export.
• Update wp-config.php with the new database name, user and password.
• Test before switching DNS (see below).

Test on the new server before you switch

This is the trick that gives you zero downtime: test the site on the new host while your domain still points at the old one. Most hosts give you a temporary URL, or you can edit your computer's hosts file to preview the real domain on the new server's IP. Click through the site, log into wp-admin, check images and forms. Fix anything broken now — before real visitors are involved. If the database won't connect, see error establishing a database connection.

Switch DNS last

Once the new copy works, change your domain's A record to the new server's IP (or update the nameservers). See how to point a domain to your server for the exact steps. DNS changes take time to propagate — up to a few hours — during which some visitors reach the old server and some the new one. Because both run the same site, nobody notices. Tip: lower your domain's TTL to 300 seconds a day before the move so the switch propagates faster.

After the move

• Update the site URL if the domain changed (Settings → General, or a search-and-replace in the database).
• Install an SSL certificate on the new host so the site stays on HTTPS — if you see a warning, see fixing "Not Secure" / expired SSL.
• Leave the old host running for a week in case you need to roll back, then cancel it.

The golden rule of migration: test everything on the new server before you touch DNS. Switch the domain last, and downtime is zero.