Full Site Editing in WordPress: A Step-by-Step Walkthrough (2026 Guide)

WordPress Full Site Editing (FSE) lets you customize your entire website — header, footer, templates, colors, fonts, and layout — from one visual editor. No code. No separate Customizer screens. No page builder plugins. It’s the biggest change to WordPress since Gutenberg, and if you’re still using the classic Customizer, you’re working with one hand tied behind your back.

FSE launched in WordPress 5.9 and has matured rapidly. As of 2026, over 75% of new WordPress themes are built for the Site Editor. This guide walks you through everything: what FSE is, how to use it, and the mistakes to avoid.

What Is WordPress Full Site Editing?

WordPress Full Site Editing is a set of features built into WordPress core that lets you design and customize every part of your site using blocks — the same blocks you use to write posts. Before FSE, you had the Customizer for basic theme options (see the official WordPress developer documentation on FSE) and needed a page builder plugin for anything beyond that.

FSE eliminates that split. Your header, footer, sidebar, blog template, 404 page, and search results page are all editable from one interface: the Site Editor (Appearance → Editor).

The catch: You need a block theme to use FSE. Classic themes (like Astra, GeneratePress, or older themes) still use the Customizer. If you go to Appearance and see “Editor” instead of “Customize,” you’re already on a block theme. If you see “Customize,” you’re on a classic theme and need to switch to unlock FSE. If you still need visual tweaks on a classic theme, you can add custom CSS instead.

How to Access the Site Editor

Getting into the Site Editor takes two clicks: Appearance → Editor. That’s it. You’ll land on the Site Editor dashboard showing a preview of your homepage with a sidebar for navigation.

What You Need First

• WordPress 6.0 or higher (6.7+ recommended for the best experience)
• A block theme — Twenty Twenty-Five is the default and a great starting point
• Admin access to your WordPress dashboard

The Site Editor dashboard shows five sections in the left sidebar. These are the five pillars of FSE, and each one controls a different aspect of your site.

The 5 Pillars of the Site Editor

Think of the Site Editor as a ship with five control stations. Each one handles a different part of your WordPress full site editing workflow.

1. Navigation

Create and manage your site’s menus. Add pages, custom links, and submenus using blocks — the same way you’d add content to a post. This replaces the old Appearance → Menus screen entirely.

2. Styles (Global Styles)

This is where you set your site’s visual identity. Colors, typography, spacing, and layout — all in one panel. Changes here apply everywhere on your site. You can also override styles on a per-block basis.

3. Pages

Edit your site’s pages directly from the Site Editor without switching to the post editor. Useful for quick edits to your homepage or about page.

4. Templates

Templates control the layout structure of different page types — your homepage, single posts, archives, search results, and 404 page. Each template defines what blocks appear and where. More on this below.

5. Patterns

Reusable block arrangements you can insert anywhere. WordPress comes with dozens of built-in patterns (hero sections, feature grids, testimonials), and you can create your own. These are the building blocks of fast site design.

Global Styles — Design Your Entire Site at Once

Global Styles is the most powerful feature in WordPress Full Site Editing. Click the Styles icon (half-moon shape) in the Site Editor sidebar, and you get control over:

• Colors — Set your palette, background, text color, link color, and button colors site-wide
• Typography — Choose fonts, sizes, line height, and letter spacing for headings and body text
• Layout — Set content width, padding, and block spacing globally
• Per-block overrides — Want all buttons to be red but all quotes to have a blue border? Set it here

“Full Site Editing represents the next evolution of WordPress — giving every user the power to customize their entire site visually, without writing a single line of code.”

— Matt Mullenweg, Co-founder of WordPress

The beauty of Global Styles is consistency. Instead of manually changing colors on every page, you set them once and they apply everywhere. Change your mind later? One edit updates the entire site.

Working with Templates — Control Every Page Type

Templates define the structure of your pages. Your homepage uses a different template than a single blog post, which uses a different template than your search results page. In FSE, you can edit all of them.

Go to Appearance → Editor → Templates to see every template your theme provides. Common templates include:

Template	Controls	When to Edit
Front Page	Homepage layout	Redesigning your homepage
Single Posts	Blog post layout	Adding/removing author bio, related posts, sidebar
Archive	Category/tag/date pages	Changing how post listings look
404	Page not found	Custom error page with helpful links
Search	Search results page	Improving how search results display

To edit a template, click on it, then add, remove, or rearrange blocks just like you would in a regular post. You can also create custom templates and assign them to specific pages — great for landing pages that need a unique layout.

Common FSE Mistakes to Avoid

FSE is powerful, but the learning curve trips people up. Here are the mistakes that waste the most time.

1. Editing a template when you meant to edit a page — This is the #1 FSE mistake. If you change the Single Post template, it changes every blog post. If you only wanted to change one post, edit the page content instead. Always check whether you’re in Template mode or Page mode.
2. Overriding Global Styles at the block level — Setting a specific font on one heading block overrides the Global Style. That’s fine intentionally, but accidental overrides create inconsistency. If something looks off, check for block-level style overrides first.
3. Skipping the responsive preview — FSE designs can look great on desktop and broken on mobile. Always click the responsive preview icons (laptop, tablet, phone) in the Site Editor toolbar before saving.
4. Ignoring patterns — Building everything from scratch when patterns exist is wasting your time. Browse the Patterns section first — there’s probably a pre-built layout close to what you need.

FAQ — WordPress Full Site Editing

Start Editing Your Entire Site Today

WordPress full site editing turns every part of your site into something you can see, click, and change. The Site Editor, Global Styles, and template system give you more control than the Customizer ever did — and it’s all built into WordPress core for free.

For more WordPress fundamentals, visit the AI Or Die Now homepage or explore the Arsenal.

Have you made the switch to a block theme yet? What’s holding you back — or what sold you on it? Tell us in the comments.