A List of WordPress Gutenberg Core Blocks

Believe it or not, finding this information in the official WordPress documentation was a nightmare. I had to go through the WordPress codebase itself to find these values.

In a site I am working on, I wanted only to enable specific WordPress Gutenberg blocks. By default, my client will never use a lot of junk, like buttons and page separators that I wanted to disable.

I am using the allowed_block_types hook to create an inclusion list where I specify what blocks I want to enable. You can also add your custom blocks to this list.

add_filter( 'allowed_block_types', 'theme_allowed_block_types', 10, 2 );

/**
    * Set allowed block types on pages/posts/CPTs
    */
function theme_allowed_block_types( $allowed_blocks, $post ) {
    if ( ! ( $post instanceof WP_Block_Editor_Context ) ) {
        return $allowed_blocks;
    }

    $allowed_blocks = array(
        'core/freeform',
        'core/video',
        'core/heading',
        'core/image',
        'core/gallery',
        'core/embed',
        'core/table',
        'core/list',
        'core/paragraph',
        'core/pullquote',
        'core/html'
    );

    return $allowed_blocks;
}

A fair warning. If you’re not using WordPress 5.8 or above, the above might cause issues for you.

Here is a list of core Gutenberg block types that can be specified:

• core/paragraph
• core/image
• core/heading
• core/gallery
• core/list
• core/quote
• core/shortcode
• core/archives
• core/audio
• core/button
• core/buttons
• core/calendar
• core/categories
• core/code
• core/columns
• core/column
• core/cover
• core/embed
• core/file
• core/group
• core/freeform
• core/html
• core/media-text
• core/latest-comments
• core/latest-posts
• core/missing
• core/more
• core/nextpage
• core/preformatted
• core/pullquote
• core/rss
• core/search
• core/separator
• core/block
• core/social-links
• core/social-link
• core/spacer
• core/subhead
• core/table
• core/tag-cloud
• core/text-columns
• core/verse
• core/video