In the evolving world of WordPress theme development, staying updated with new technologies and features is essential. One such revolutionary feature is Full Site Editing (FSE), introduced by WordPress to enable users and developers to have more control over the website’s entire structure and content. FSE extends beyond the traditional WordPress editor to allow seamless customization of headers, footers, sidebars, and more. This article dives into WordPress classic theme development with FSE support, explaining its benefits, types of websites you can create, and a detailed guide on how to get started with developing classic themes while embracing FSE.

What is Full Site Editing (FSE)?

Full Site Editing (FSE) is a feature introduced in WordPress that aims to simplify the theme development process. Unlike traditional themes, where you work mainly with the theme’s core structure (like header.php, footer.php, etc.), FSE enables developers to control the entire site design directly through the block editor.

With FSE, WordPress has evolved from just managing content to providing users and developers with a complete page-building experience. It’s designed to make customization easier and more intuitive, empowering both developers and website owners to build and modify their sites visually.

Benefits of Using Full Site Editing (FSE) in Classic Theme Development

1. Complete Design Control

FSE provides complete control over the entire website layout and structure, not just the content. You can design headers, footers, and sidebars directly within the WordPress block editor, giving you flexibility to create custom themes.

2. Improved Customization

With FSE, developers can use WordPress’ native block editor to customize the layout, color scheme, fonts, and other design elements without needing to code everything manually. The block-based approach makes it easy for users to personalize their websites without compromising on the look and feel.

3. Better User Experience

FSE enables WordPress users to take advantage of visual editing. This means even non-technical users can now customize their website’s structure and design in real-time without needing to dive deep into PHP or CSS code.

4. Unified Editing Experience

Before FSE, users needed to switch between various editing screens for different parts of the site (e.g., page editor, customizer, theme settings). FSE allows users to edit their entire site from one unified place—streamlining the development process and making it easier for users to maintain consistency across pages.

5. Future-Proofing Your Theme

Since FSE is the future of WordPress, adopting it while building a classic theme ensures that your theme is future-proof. By integrating FSE support into your classic theme, you ensure that your website remains compatible with future WordPress updates and features.

Types of Websites You Can Build with WordPress Classic Themes and FSE Support

Developing a classic WordPress theme with FSE support opens the door to a wide variety of website types. Here are some examples of websites you can create using this approach:

1. Business Websites

Classic themes with FSE support are ideal for building business websites. With the ability to customize headers, footers, and overall layout, you can craft professional sites that meet your branding needs.

Features:

Customizable homepage sections.
Integration of custom blocks for showcasing services, testimonials, and portfolios.
Business-specific features like contact forms, team members, and client logos.

2. Portfolio Websites

For creative professionals, FSE enables you to build portfolio websites with ease. You can customize grid layouts, image galleries, and project displays, ensuring your portfolio looks visually appealing.

Features:

High-quality image and video galleries.
Customizable project displays using blocks.
Sleek, minimalistic designs to showcase creative work.

3. Blogs

WordPress classic themes with FSE support are perfect for bloggers looking for flexibility and control over their website’s design. With FSE, you can manage everything from your blog’s layout to the typography and colors directly in the block editor.

Features:

Custom post layouts and templates.
Easy-to-manage blog grid and article sections.
Built-in social sharing options for blog posts.

4. E-Commerce Websites

For building e-commerce sites, FSE gives you the power to customize the product pages, shopping cart, and checkout process. FSE works seamlessly with WooCommerce, the most popular WordPress plugin for building online stores.

Features:

Customizable product pages with dynamic layouts.
Customizable headers and footers with navigation links for store categories.
Integration with WooCommerce product blocks and cart functionalities.

5. Non-Profit and Charity Websites

FSE support in classic WordPress themes is beneficial for non-profit organizations or charities. You can design custom donation forms, showcase events, and highlight causes without extensive coding.

Features:

Custom donation forms and integrations.
Event calendars and event management.
Contact and donation call-to-action sections on the homepage.

6. Landing Pages

Landing pages built with FSE give you full control over their design, making them perfect for marketing campaigns. You can build compelling lead generation pages without writing a single line of code.

Features:

Hero sections with background images and videos.
Lead capture forms and call-to-action buttons.
Easy-to-edit, custom layouts.

How to Start with WordPress Classic Theme Development with FSE Support

Now that you understand the benefits and types of websites you can build, let’s explore how to get started with WordPress classic theme development with FSE support. Here’s a step-by-step guide:

Step 1: Set Up Your Development Environment

Before you begin developing your classic WordPress theme with FSE support, set up a local development environment. You can use tools like Local by Flywheel or XAMPP for easy WordPress installations on your computer.

Step 2: Create Your WordPress Theme

Start by creating a new theme folder within the wp-content/themes directory. Name your theme something like my-fse-theme and create a style.css file with basic theme information:

/*
Theme Name: My FSE Theme
Theme URI: https://example.com
Description: A WordPress theme with Full Site Editing support.
Version: 1.0
Author: Your Name
*/

Step 3: Enable FSE in Your Theme

To enable Full Site Editing, you need to include a theme.json file in your theme’s root directory. This file defines which blocks and templates the theme supports. Here’s an example:

{
  "version": 2,
  "settings": {
    "custom": {
      "color": {
        "background": "#ffffff",
        "text": "#333333"
      }
    }
  },
  "templateParts": [
    "header",
    "footer"
  ]
}

This file enables specific theme settings and template parts for Full Site Editing.

Step 4: Design Custom Templates with Blocks

Now, you can start building your custom templates using WordPress’s block editor. For example, you can create a custom header, footer, and even single post layouts using the block editor. You can add blocks like images, text, navigation menus, and buttons directly into these templates.

Step 5: Add Block Support to Template Parts

Once you have created the templates, you can add block support to template parts like the header or footer. Use the block-template feature to define custom blocks for these areas. Here’s an example:

// In header.php
<div class="header">
  <?php if (has_block('core/navigation')): ?>
    <!-- Block Navigation Area -->
    <div class="navigation"><?php echo do_blocks('core/navigation'); ?></div>
  <?php endif; ?>
</div>

Step 6: Test Your Theme

Test your theme extensively to ensure that all template parts, blocks, and customizations work seamlessly with Full Site Editing. Make sure the theme looks great on all devices, and tweak the block styling to fit your design needs.

Frequently Asked Questions (FAQs)

1. What is the difference between a classic WordPress theme and a theme with FSE support?

A classic WordPress theme typically focuses on traditional PHP template files for customizations, while a theme with FSE support allows you to edit the entire website through the block editor, offering a more visual and dynamic design experience.

2. Do I need coding knowledge to develop a WordPress theme with FSE support?

While having knowledge of PHP, HTML, and CSS is helpful, FSE makes it easier to customize and develop WordPress themes using the block editor. This allows developers and even non-technical users to create a unique design without extensive coding.

3. Can I use Full Site Editing with any WordPress theme?

Not all WordPress themes support FSE. You need to either choose a theme that is designed for Full Site Editing or manually add the support by integrating the block editor and the theme.json file as described in this guide.

4. Is FSE compatible with all WordPress plugins?

Most WordPress plugins work seamlessly with FSE themes. However, some older plugins or those that rely on traditional theme customizations may not fully support the block-based system. Always test plugins when building with FSE.

5. Can I create custom blocks with Full Site Editing?

Yes! WordPress allows you to create custom blocks using the Block API. These blocks can be incorporated into your FSE-enabled themes to add advanced functionality and custom features.

Conclusion

WordPress classic theme development with FSE support allows developers to combine the best of both worlds—maintaining the familiarity of traditional

themes while embracing the flexibility and visual power of Full Site Editing. Whether you’re building a business site, blog, portfolio, or e-commerce platform, FSE transforms the way you interact with WordPress theme customization. By following this guide and integrating FSE features into your classic theme, you can create modern, dynamic websites that are easy to maintain and optimized for the future.

This page was last edited on 12 March 2025, at 3:55 pm