How to Use One Parent Theme for Multiple WordPress Sites

You have two WordPress sites and want to use the same parent theme on both. The goal is simple: update the theme once, and have it apply to all your sites automatically.

The problem: WordPress doesn’t allow this by default. Each WordPress installation requires its own copy of theme files in its wp-content/themes/ directory.

The solutions: You have three options:

1. WordPress Multisite (best for most people)
2. Git version control + deployment
3. Symbolic links (has security risks)

This guide shows you how to implement each method in 2025.

How to Share a Parent Theme Across Multiple WordPress Sites

Method 1: WordPress Multisite (Recommended)

Best for: Sites you manage yourself, sites sharing similar purposes, or sites for different departments of one organization.

How it works: One WordPress installation hosts multiple sites that all share the same core files, plugins, and themes.

Steps:

1. Back up your existing sites
2. Add define('WP_ALLOW_MULTISITE', true); to wp-config.php
3. Go to Tools → Network Setup, follow instructions (full Multisite setup guide)
4. Upload parent theme in Network Admin → Themes
5. Click “Network Enable”
6. Create second site in Network Admin → Sites → Add New
7. Activate the theme on each site under Appearance

Updates: Update once in Network Admin, applies to all sites instantly.

Pros: One update for all sites, saves server space, shared management

Cons: All sites share database, all go down together if one crashes

Method 2: Git Version Control + Deployment

Best for: Developers comfortable with command line, agencies, or sites on different hosts.

How it works: Store your theme in Git, deploy to multiple sites.

Steps:

1. In your theme folder, run: git init git add . git commit -m "Initial commit"
2. Create GitHub repository and push: git remote add origin your-repo-url git push -u origin main
3. On each site, clone the theme: cd /wp-content/themes/ git clone your-repo-url your-theme-name
4. To update all sites: cd /wp-content/themes/your-theme-name git pull

Alternative: Use GitHub Deployments for WordPress (WordPress.com Business/Commerce plans only).

Pros: Works across different hosts, full version history, sites stay independent

Cons: Requires Git knowledge, manual deployment to each site

Method 3: Symbolic Links (Not Recommended)

Security warning: Hackers actively exploit symbolic links to perform cross-account attacks and access sensitive files like wp-config.php.

Only use if: You control the entire server and understand Linux security.

Steps:

1. Install theme on first site
2. Create symlink on second site: ln -s /var/www/site1/wp-content/themes/your-theme /var/www/site2/wp-content/themes/your-theme
3. Set permissions: chmod 755 on theme folder

Limitations: Same server only, blocked on most shared hosting, high security risk

Quick Comparison

Conclusion

Best choice: WordPress Multisite.

Install the parent theme once, use it across all sites, and update in one place. It’s the official WordPress solution.

Use Git if: Sites are on different hosts or you need complete independence.

Avoid symlinks unless: You’re a Linux expert with full server control.

Learn more:

• WordPress Multisite Documentation
• Git Basics Tutorial
• WordPress Developer Resources