WordPress offers multiple ways to customize websites, allowing users to change layouts, colors, fonts, and other design elements. Two of the most common tools for this purpose are the Customizer and the Site Editor. While both serve similar functions, they differ significantly in how they work and what they can do.
Understanding WordPress Customizer
The WordPress Customizer has been a core feature of WordPress for many years. It provides a live preview of changes while allowing users to modify various aspects of their site.
Key Features of Customizer
- Live Preview: Any changes made can be seen in real time before publishing.
- Global Settings: Users can customize site identity, typography, colors, and more.
- Widget & Menu Management: It allows configuration of widgets and menus with ease.
- Theme-Specific Options: Many themes offer additional customization settings within the Customizer.
The Customizer is primarily used in classic themes and remains relevant for users who prefer its structured approach.

What is the WordPress Site Editor?
The Site Editor, introduced with the Full Site Editing (FSE) feature in WordPress 5.9, represents a new way to control website design. It fully integrates with block-based themes, allowing users to manage their entire site layout using blocks.
Key Features of Site Editor
- Full-Site Control: Users can customize headers, footers, and other theme templates, not just content areas.
- Block-Based Editing: Works like the block editor for posts but applies to the entire site.
- Template Editing: Allows users to modify templates directly within WordPress.
- Style Variations: Users can switch between different pre-set styles or create their own.
This editor is only available for block-based themes, making it ideal for those who prefer a more visual, flexible approach to website design.
Key Differences Between Customizer and Site Editor
While both tools are designed for site customization, they operate in different ways. Below is a detailed comparison:
Feature | WordPress Customizer | WordPress Site Editor |
---|---|---|
Theme Compatibility | Classic themes | Block-based themes |
Customization Scope | Settings-based changes | Full site design flexibility |
Editing Style | Live preview with settings-based controls | Entirely block-based |
Widget & Menu Control | Supports widget and menu configuration | Widgets replaced by block areas |

When Should You Use Each?
Choosing between the Customizer and the Site Editor depends on your theme and design needs:
- Use the Customizer if: You have a classic theme and prefer a structured, settings-based way of making changes.
- Use the Site Editor if: You’re working with a block-based theme and want full control over your site’s design using blocks.
The Future of WordPress Customization
As WordPress continues to evolve, full-site editing is becoming the default method for customization. While the Customizer is still widely used, it may eventually be replaced as more users and developers transition to block-based themes.
For now, understanding the differences between these two tools will help you decide which is best suited for your website. Whether you prefer the structured approach of the Customizer or the flexibility of the Site Editor, WordPress offers powerful options to create and manage your site.