WordPress Daily Routine

Customizer fails to open or shows a blank screen when trying to modify theme settings.

Theme Customizer Not Loading

Key Points: The WordPress Customizer hangs, loads endlessly, or shows a white screen.

You go to Appearance → Customize — and wait… and wait… nothing. It spins, flashes, or crashes. That’s your theme tripping over something inside the Customizer.

🧯 Common Triggers

• JS or PHP errors in theme’s customizer.php
• Conflicts with third-party plugins (especially visual builders)
• Theme uses deprecated Customizer controls
• Broken live preview hooks or missing callbacks

🛠️ Fixes

1. Enable WP_DEBUG to reveal any PHP errors
2. Deactivate all plugins and try again
3. Switch to a default theme to test if the problem is theme-specific
4. Use browser console to check JS issues

🔍 Insight

Some themes offload their settings to custom panels — try using their provided options panel if Customizer is blocked.