site_icon_url() WordPress Function
The site_icon_url() function is used to retrieve the URL of the site icon. The site icon is used as a favicon, as well as in the Site Identity section of the Customizer.
site_icon_url( int $size = 512, string $url = '', int $blog_id ) #
Displays the Site Icon URL.
Parameters
- $size
- (int)(Optional) Size of the site icon. Default 512 (pixels). - Default value: 512 
- $url
- (string)(Optional) Fallback url if no site icon is found. - Default value: '' 
- $blog_id
- (int)(Optional) ID of the blog to get the site icon for. Default current blog. 
Source
File: wp-includes/general-template.php
function site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
	echo esc_url( get_site_icon_url( $size, $url, $blog_id ) );
}
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Changelog
| Version | Description | 
|---|---|
| 4.3.0 | Introduced. |