Code

php

1 // Method 1: Disable Gutenberg completely
2 add_filter('use_block_editor_for_post', '__return_false', 10);
3 
4 // Method 2: Disable for specific post types only
5 function disable_gutenberg_for_post_types($can_edit, $post_type) {
6     $disabled_post_types = array('page', 'custom_post_type');
7 
8     if (in_array($post_type, $disabled_post_types)) {
9         return false;
10     }
11 
12     return $can_edit;
13 }
14 add_filter('use_block_editor_for_post_type', 'disable_gutenberg_for_post_types', 10, 2);
15 
16 // Method 3: Disable for users with specific roles
17 function disable_gutenberg_for_roles($can_edit, $post) {
18     $current_user = wp_get_current_user();
19     $disabled_roles = array('contributor', 'author');
20 
21     if (array_intersect($disabled_roles, $current_user->roles)) {
22         return false;
23     }
24 
25     return $can_edit;
26 }
27 add_filter('use_block_editor_for_post', 'disable_gutenberg_for_roles', 10, 2);
28 
29 // Bonus: Remove Gutenberg CSS from frontend
30 function remove_gutenberg_css() {
31     wp_dequeue_style('wp-block-library');
32     wp_dequeue_style('wp-block-library-theme');
33     wp_dequeue_style('wc-block-style'); // WooCommerce blocks
34     wp_dequeue_style('global-styles'); // Theme.json
35 }
36 add_action('wp_enqueue_scripts', 'remove_gutenberg_css', 100);

Disable Gutenberg Block Editor

This snippet provides different methods to disable the Gutenberg block editor in WordPress and revert to the Classic Editor.

// Method 1: Disable Gutenberg completely
add_filter('use_block_editor_for_post', '__return_false', 10);

// Method 2: Disable for specific post types only
function disable_gutenberg_for_post_types($can_edit, $post_type) {
    $disabled_post_types = array('page', 'custom_post_type');

    if (in_array($post_type, $disabled_post_types)) {
        return false;
    }

    return $can_edit;
}
add_filter('use_block_editor_for_post_type', 'disable_gutenberg_for_post_types', 10, 2);

// Method 3: Disable for users with specific roles
function disable_gutenberg_for_roles($can_edit, $post) {
    $current_user = wp_get_current_user();
    $disabled_roles = array('contributor', 'author');

    if (array_intersect($disabled_roles, $current_user->roles)) {
        return false;
    }

    return $can_edit;
}
add_filter('use_block_editor_for_post', 'disable_gutenberg_for_roles', 10, 2);

// Bonus: Remove Gutenberg CSS from frontend
function remove_gutenberg_css() {
    wp_dequeue_style('wp-block-library');
    wp_dequeue_style('wp-block-library-theme');
    wp_dequeue_style('wc-block-style'); // WooCommerce blocks
    wp_dequeue_style('global-styles'); // Theme.json
}
add_action('wp_enqueue_scripts', 'remove_gutenberg_css', 100);

When to Use This

Legacy Sites: Sites that were built with Classic Editor and don't need block editor features
Client Preference: Some clients prefer the simpler Classic Editor interface
Custom Meta Boxes: When using extensive custom meta boxes that don't work well with Gutenberg
Performance: Removing unused Gutenberg CSS can slightly improve page load times

Alternative

Instead of using code, you can install the official Classic Editor plugin which is maintained by WordPress core team.

1	// Method 1: Disable Gutenberg completely
2	add_filter('use_block_editor_for_post', '__return_false', 10);
3
4	// Method 2: Disable for specific post types only
5	function disable_gutenberg_for_post_types($can_edit, $post_type) {
6	$disabled_post_types = array('page', 'custom_post_type');
7
8	if (in_array($post_type, $disabled_post_types)) {
9	return false;
10	}
11
12	return $can_edit;
13	}
14	add_filter('use_block_editor_for_post_type', 'disable_gutenberg_for_post_types', 10, 2);
15
16	// Method 3: Disable for users with specific roles
17	function disable_gutenberg_for_roles($can_edit, $post) {
18	$current_user = wp_get_current_user();
19	$disabled_roles = array('contributor', 'author');
20
21	if (array_intersect($disabled_roles, $current_user->roles)) {
22	return false;
23	}
24
25	return $can_edit;
26	}
27	add_filter('use_block_editor_for_post', 'disable_gutenberg_for_roles', 10, 2);
28
29	// Bonus: Remove Gutenberg CSS from frontend
30	function remove_gutenberg_css() {
31	wp_dequeue_style('wp-block-library');
32	wp_dequeue_style('wp-block-library-theme');
33	wp_dequeue_style('wc-block-style'); // WooCommerce blocks
34	wp_dequeue_style('global-styles'); // Theme.json
35	}
36	add_action('wp_enqueue_scripts', 'remove_gutenberg_css', 100);