The get_site_icon_url() WordPress PHP function returns the URL of the site icon.
Usage
get_site_icon_url($size, $url, $blog_id)
Example:
Input: get_site_icon_url(64, 'https://example.com/default-icon.png', 2)
Output: 'https://yourwebsite.com/site-icon.png'
Parameters
$size(int) Optional: Size of the site icon. Default is 512 (pixels).$url(string) Optional: Fallback URL if no site icon is found. Default is an empty string.$blog_id(int) Optional: ID of the blog to get the site icon for. Default is the current blog.
More information
See WordPress Developer Resources: get_site_icon_url()
Examples
Display site icon in an <img> tag
Display the site icon with a size of 64 pixels and a fallback URL.
$site_icon_url = get_site_icon_url(64, 'https://example.com/default-icon.png'); echo '<img src="' . esc_url($site_icon_url) . '" alt="Site Icon" />';
Set site icon as favicon in a theme
Set the site icon as a favicon in the header.php file of your WordPress theme.
$site_icon_url = get_site_icon_url(32); echo '<link rel="icon" href="' . esc_url($site_icon_url) . '" />';
Display site icon URL in a meta tag
Display the site icon URL in a meta tag for social media sharing.
$site_icon_url = get_site_icon_url(120); echo '<meta property="og:image" content="' . esc_url($site_icon_url) . '" />';
Display site icon for a specific blog in a multisite installation
Display the site icon URL for a specific blog (with ID 3) in a multisite installation.
$site_icon_url = get_site_icon_url(64, 'https://example.com/default-icon.png', 3); echo '<img src="' . esc_url($site_icon_url) . '" alt="Site Icon" />';
Display site icon URL with custom fallback
Display the site icon URL with a custom fallback URL if no site icon is set.
$fallback_icon_url = get_template_directory_uri() . '/images/default-icon.png'; $site_icon_url = get_site_icon_url(64, $fallback_icon_url); echo '<img src="' . esc_url($site_icon_url) . '" alt="Site Icon" />';