WORDPRESS · DESIGN

WordPress Full Site Editing (FSE) Guide: Edit Your Entire Site with Blocks 2026

AsiaGB · June 21, 2026 · 10 min read

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WORDPRESS · DESIGN

What is WordPress Full Site Editing (FSE)?

Full Site Editing (FSE) is a WordPress feature that allows users to edit all parts of a website — including the header, footer, templates, sidebar, and every other section — using the WordPress Block Editor directly from the WordPress dashboard. No need to access code editors or manually edit PHP files. This democratizes web design, making it accessible to users without programming knowledge.

Since WordPress 5.9, FSE has been officially introduced, along with a new category of themes called Block Themes, which are designed entirely using blocks. FSE has continued to evolve with every subsequent WordPress release — versions 6.0, 6.1, 6.2, 6.3, and 6.4 have all added new FSE features.

FSE represents a revolution in WordPress theme customization: What once required editing PHP template files can now be done by dragging and dropping blocks through the WordPress Admin Panel, freely and without programming knowledge.

FSE Requirements — Block Themes

Full Site Editing features work at their best exclusively with Block Themes — WordPress themes built entirely from blocks rather than traditional PHP templates.

Block Theme vs Classic Theme

Block Theme: Built from JSON + Blocks → Full FSE support → Examples: Twenty Twenty-Two, Twenty Twenty-Three, Twenty Twenty-Four
Classic Theme: Built from PHP Template files → FSE does not work → Must switch themes to use FSE

Before using FSE, verify that your current theme is a Block Theme. If you are using a Classic Theme, you must first switch to a Block Theme, or wait for your current theme to release a Block Theme version if development is still active.

How to Enable FSE in WordPress

Enabling FSE is straightforward. Your WordPress site simply needs to use a Block Theme and run WordPress 5.9 or later.

Steps to Enable FSE

Update WordPress to the Latest Version: Go to WordPress Admin → Updates and update WordPress Core, all plugins, and all themes.
Switch to a Block Theme: Go to Appearance → Themes and find a Block Theme (look for "Full Site Editing" or "Block Theme" tags). Install and activate it.
Access the Site Editor: Once a Block Theme is active, go to Appearance → Editor (or Appearance → Edit Site). This is the WordPress Site Editor.
Start Editing: Within the Site Editor, you can now edit templates, headers, footers, and styles across your entire site.

Important: No special plugins are required to use FSE. It is a built-in feature of WordPress Core. Simply use a Block Theme and you can start using FSE immediately.

The Site Editor — Heart of FSE

The Site Editor is the interface that makes Full Site Editing possible. This is where you edit templates, global styles, patterns, and all other site-wide elements.

Key Components of the Site Editor

Canvas/Preview Area: Displays a real-time preview of your website as you make changes.
Block Sidebar: Shows available blocks that you can drag into your design.
Toolbar: Top toolbar for selecting templates, fonts, colors, and other settings.
Global Styles Panel: Edit colors, typography, and layouts for your entire site in one place.
Navigation Modal: Select which template or page you want to edit.

Template Editor — Edit Site Templates

The Template Editor allows you to customize the templates that form the structural foundation of your site — such as Single Post templates, Page templates, and Archive templates.

Essential Templates for Block Themes

index.html: The primary fallback template used across your site.
home.html: Template for the blog/home page.
single.html: Template for displaying individual posts.
page.html: Template for displaying static pages.
archive.html: Template for archive and category pages.
search.html: Template for search results.
404.html: Template for 404 error pages.

When you edit a template, the changes apply to all pages using that template. For example, editing single.html changes the layout for all posts site-wide.

Global Styles — Unified Control Over Colors and Typography

Global Styles is a feature that lets you define colors, typography, spacing, and other visual properties for your entire site from one central location.

Components of Global Styles

Color Palette: Set primary colors, secondary colors, button colors, link colors.
Typography: Define fonts for headings, body text, and other text elements.
Spacing: Control margins and padding for blocks.
Border Radius: Set corner rounding for boxes and buttons.
Shadow: Add drop shadows to elements.

Benefit of Global Styles: When you change a color in Global Styles, that color updates across your entire website instantly. No need to manually edit individual blocks.

Style Book — Visual Reference of Site Components

The Style Book (or Pattern Browser) displays examples of templates, block patterns, and reusable components available to your site — such as hero sections, cards, and button styles.

Benefits of the Style Book

View examples of every block available.
Drag any pattern directly into your pages.
Reference component styles to maintain consistency.
Manage all reusable blocks in one place.

Synced Patterns — Patterns That Update Together

Synced Patterns are one of FSE's most powerful features. When you create a Synced Pattern, every copy of that pattern updates simultaneously. Edit one instance, and all copies change together.

Synced Patterns vs Reusable Blocks

Synced Patterns: All copies update together → Ideal for headers, footers, author boxes
Reusable Blocks: Each copy can be edited independently → Ideal for components that need variations

Classic Theme vs Block Theme — Impact on Users

The differences between Classic and Block themes significantly affect how you customize your site's design.

Feature	Classic Theme	Block Theme
Built From	PHP Template Files	JSON + Blocks
FSE Support	✗	✓
Customizer	✓	Limited
Edit Templates	Requires Code	Visual Editor
Global Styles	✗	✓
Learning Curve	Requires PHP	Easy - Visual
Customization Depth	Very Deep	Deep + Visual

Popular Block Themes in 2026

WordPress offers several free Block Themes ranging from official WordPress releases to community-created themes.

Recommended Block Themes

Twenty Twenty-Five (Latest): Official WordPress 2025 theme — released with WordPress 6.7, the newest official block theme.
Twenty Twenty-Four (2024): Official WordPress 2024 theme — full FSE support out of the box.
Twenty Twenty-Three: Official WordPress 2023 theme — classic FSE block theme.
Twenty Twenty-Two: The first official theme with full FSE support (WordPress 5.9).
Ollie: Free block theme excellent for blogs.
Seedlet: Free official WordPress block theme example.

When Should You Use FSE?

FSE is not the right choice for every project. Consider your use case carefully.

Use FSE When:

You want to edit your design without touching code.
You have WordPress knowledge but no programming skills.
Your site is a blog, portfolio, or small business site.
You need to customize your theme quickly and visually.
You prefer block-based, visual editing.

Avoid FSE When:

You need deep, complex customization.
You have legacy plugins that require Classic Themes.
You need the full power of PHP coding control.
Your site has many complex custom post types.

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Frequently Asked Questions About Full Site Editing (FSE)

What type of theme works best with Full Site Editing (FSE)?

FSE is designed to work with Block Themes, which are WordPress themes built entirely with blocks such as Twenty Twenty-Two, Twenty Twenty-Three, or Twenty Twenty-Four. Classic themes (PHP-based templates) do not support most FSE features because they are built from PHP templates rather than blocks.

How is FSE different from Page Builders like Elementor or Divi?

FSE works through the WordPress Site Editor, which is part of WordPress Core and free. It uses the Block Editor to build your site without requiring a separate Page Builder plugin. Elementor and Divi are special plugins offering more features but come with costs and plugin dependencies. FSE is considered more lightweight and native to WordPress.

What do I do if FSE styles break my site or if I need to revert changes?

FSE uses Global Styles stored in your WordPress theme JSON file or database. If something breaks, go to WordPress Admin → Appearance → Styles and click 'Reset to default'. If your theme has Default Global Styles, you can reset the theme JSON. Usually you can revert quickly without touching the database directly.

Can I use FSE with a Classic Theme?

Classic themes do not support full FSE features because they are built with PHP templates. To use FSE, you must switch to a Block Theme such as Twenty Twenty-Three, Twenty Twenty-Four, or other Block themes from WordPress.org. Some classic themes may have partial block support but not as complete as dedicated Block Themes.

What is the difference between Synced Patterns and Reusable Blocks?

Reusable Blocks are blocks you save and reuse across pages, but each copy can be edited independently. Synced Patterns (in FSE) are patterns where every copy updates simultaneously — edit one and all copies change together. Synced Patterns are ideal for components that must remain identical everywhere, such as headers, footers, and author boxes.