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How can I create a custom Gutenberg block for my WordPress theme?

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How can I create a custom Gutenberg block for my WordPress theme?

Asked on Jan 31, 2026

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Creating a custom Gutenberg block involves using the Block Editor API and JavaScript to define the block's functionality and appearance. This process requires some familiarity with JavaScript and the WordPress REST API.

<!-- BEGIN COPY / PASTE -->
    // Register a new block type
    wp.blocks.registerBlockType('mytheme/custom-block', {
      title: 'Custom Block',
      icon: 'smiley',
      category: 'common',
      edit: function(props) {
        return wp.element.createElement('p', {}, 'Hello, Gutenberg!');
      },
      save: function(props) {
        return wp.element.createElement('p', {}, 'Hello, Gutenberg!');
      }
    });
    <!-- END COPY / PASTE -->

Additional Comment:

Ensure you enqueue the block's JavaScript file in your theme's functions.php using wp_enqueue_script().
Use npm and tools like webpack or Babel to manage and compile your block's JavaScript code.
Refer to the WordPress Block Editor Handbook for detailed guidance on block development.

✅ Answered with WordPress best practices.

Ask any question about WordPress here... and get an instant response.

How can I create a custom Gutenberg block for my WordPress theme?

Asked on Jan 31, 2026

Answer

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