To add support for SVG (Scalable Vector Graphics) images in the WordPress dashboard using the functions.php file of your theme or a custom plugin, you can use the wp_check_filetype_and_ext filter to allow SVG file uploads.
Open your theme’s functions.php file or create a custom plugin:
Appearance > Theme Editor
// Allow SVG file uploads
function allow_svg_upload($data, $file, $filename, $mimes) {
$filetype = wp_check_filetype_and_ext($filename, $filename, $mimes);
return [
'ext' => $filetype['ext'],
'type' => $filetype['type'],
'proper_filename' => $data['proper_filename']
];
}
add_filter('wp_check_filetype_and_ext', 'allow_svg_upload', 10, 4);
// Allow SVG file upload in WordPress Media Library
function allow_svg_mime_types($mimes) {
$mimes['svg'] = 'image/svg+xml';
$mimes['svgz'] = 'image/svg+xml';
return $mimes;
}
add_filter('upload_mimes', 'allow_svg_mime_types');
Save your changes.