What Is Gutenberg? WordPress Block Editor Explained for 2026 | CrestVox Studio
Gutenberg is the default block editor in WordPress, introduced in version 5.0 in 2018. It replaced the classic TinyMCE editor with a modern, visual approach to content creation where every element on the page, whether a paragraph, heading, image, button, or column layout, is an individual “block” that can be added, moved, and configured independently. […]
Gutenberg is the default block editor in WordPress, introduced in version 5.0 in 2018. It replaced the classic TinyMCE editor with a modern, visual approach to content creation where every element on the page, whether a paragraph, heading, image, button, or column layout, is an individual “block” that can be added, moved, and configured independently. Gutenberg transformed how content is built in WordPress, making it far more flexible and visual without requiring any coding knowledge.
Why Gutenberg Changed WordPress Development
Before Gutenberg, building complex page layouts in WordPress typically required a third-party page builder plugin like Elementor or Divi, or custom theme templates written by a developer. Gutenberg brought structured, block-based editing into the WordPress core, allowing anyone to create multi-column layouts, add reusable content blocks, and design visually rich pages without a plugin. This reduced dependency on heavy page builders and gave developers a standardised way to build extensible, performant content experiences.
How Gutenberg Blocks Work
In the Gutenberg editor, every piece of content is a block. The editor comes with dozens of built-in blocks including paragraphs, headings, images, galleries, buttons, tables, quotes, embeds, and layout blocks like columns and groups. Each block has its own settings panel in the right sidebar where you can control its appearance, alignment, spacing, and behaviour.
Blocks can be saved as reusable blocks, allowing you to create a design once and insert it anywhere on your site. This is particularly useful for repeating elements like call-to-action sections, testimonial layouts, or newsletter sign-up forms.
Gutenberg vs. Classic Editor vs. Page Builders
- Classic Editor — The legacy WordPress editor. Still available via a plugin. Better for writers who prefer a simple word-processor interface but lacks visual layout capabilities.
- Gutenberg — Built into WordPress core. Best for structured content and blog posts. Increasingly powerful with Full Site Editing (FSE) for complete theme customisation.
- Elementor / Divi — Third-party page builders with drag-and-drop interfaces and wider template libraries. More flexible for complex designs but add weight to your site and create theme dependency.
Full Site Editing and Gutenberg
Gutenberg is now the foundation for WordPress Full Site Editing (FSE), which extends block editing beyond content pages to headers, footers, and entire theme templates. With an FSE-compatible theme like Twenty Twenty-Four or GeneratePress (with its block theme variant), you can design every part of your website using the block editor without writing any code. This is a significant shift in how WordPress themes are built and used.
Gutenberg for Custom WordPress Development
For developers, Gutenberg introduces a React-based JavaScript framework for building custom blocks. Custom Gutenberg blocks allow businesses to create branded, reusable content components that content editors can use without breaking the design. For example, a testimonial block, a services card block, or an FAQ accordion can be built once by a developer and used safely by any content editor across the site.
At CrestVox Studio, we build custom Gutenberg blocks as part of our WordPress development projects, giving clients the flexibility to update their content while maintaining design consistency. Combine custom blocks with a well-configured child theme and you have a WordPress setup that is both powerful and easy to manage. Explore how WordPress plugins extend Gutenberg further with additional block libraries.