Title: wp_render_duotone_support
Published: August 8, 2023
Last modified: April 28, 2025

---

# wp_render_duotone_support( string $block_content, array $block ): string

## In this article

 * [Parameters](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#wp--skip-link--target)

This function has been deprecated since 6.3.0. Use WP_Duotone::render_duotone_support()
instead.

This function’s access is marked private. This means it is not intended for use 
by plugin or theme developers, only by core. It is listed here for completeness.

Renders out the duotone stylesheet and SVG.

## 󠀁[Parameters](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#parameters)󠁿

 `$block_content`stringrequired

Rendered block content.

`$block`arrayrequired

Block object.

## 󠀁[Return](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#return)󠁿

 string Filtered block content.

## 󠀁[Source](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#source)󠁿

    ```php
    function wp_render_duotone_support( $block_content, $block ) {
    	_deprecated_function( __FUNCTION__, '6.3.0', 'WP_Duotone::render_duotone_support()' );
    	$wp_block = new WP_Block( $block );
    	return WP_Duotone::render_duotone_support( $block_content, $block, $wp_block );
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/deprecated.php#L5233)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/deprecated.php#L5233-L5237)

## 󠀁[Related](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#related)󠁿

| Uses | Description | 
| [WP_Duotone::render_duotone_support()](https://developer.wordpress.org/reference/classes/wp_duotone/render_duotone_support/)`wp-includes/class-wp-duotone.php` |

Render out the duotone CSS styles and SVG.

  | 
| [WP_Block::__construct()](https://developer.wordpress.org/reference/classes/wp_block/__construct/)`wp-includes/class-wp-block.php` |

Constructor.

  | 
| [_deprecated_function()](https://developer.wordpress.org/reference/functions/_deprecated_function/)`wp-includes/functions.php` |

Marks a function as deprecated and inform when it has been used.

  |

[Show 1 more](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#)
[Show less](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#)

## 󠀁[Changelog](https://developer.wordpress.org/reference/functions/wp_render_duotone_support/?output_format=md#changelog)󠁿

| Version | Description | 
| [6.3.0](https://developer.wordpress.org/reference/since/6.3.0/) | Deprecated. Use [WP_Duotone::render_duotone_support()](https://developer.wordpress.org/reference/classes/wp_duotone/render_duotone_support/) instead. | 
| [6.1.0](https://developer.wordpress.org/reference/since/6.1.0/) | Allow unset for preset colors. | 
| [5.8.0](https://developer.wordpress.org/reference/since/5.8.0/) | Introduced. |

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