apply_filters( 'upload_mimes', array $t, int|WP_User|null $user )

Filters the list of allowed mime types and file extensions.

Contents

Parameters
Source
Related
- Used By
Changelog
User Contributed Notes
- Feedback

Parameters

$t array: Mime types keyed by the file extension regex corresponding to those types.
$user int|WP_User|null: User ID, User object or null if not provided (indicates current user).

Source

File: wp-includes/functions.php. View all references

return apply_filters( 'upload_mimes', $t, $user );

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Used By

Used By
Used By	Description
get_allowed_mime_types() wp-includes/functions.php	Retrieves the list of allowed mime types and file extensions.

Changelog

Changelog
Version	Description
2.0.0	Introduced.

User Contributed Notes

3

Contributed by Mahesh Waghmare — 6 years ago

Add MIME types.

function my_custom_mime_types( $mimes ) {
	
	// New allowed mime types.
	$mimes['svg']  = 'image/svg+xml';
	$mimes['svgz'] = 'image/svg+xml';
	$mimes['doc']  = 'application/msword'; 

    // Optional. Remove a mime type.
    unset( $mimes['exe'] );

	return $mimes;
}

add_filter( 'upload_mimes', 'my_custom_mime_types' );

Feedback

Allow SVGZ mime type:

 &lt;?php function svgz_mime_types( $mimes ) {         // SVGZ allowed mime types.         $mimes['svgz'] = 'application/x-gzip';         return $mimes; } add_filter( 'upload_mimes', 'svgz_mime_types' ); ?&gt;

And if you want to know what is your real file mime type, you can use this service: https://wp-check-mime-type.com/. — By dotMastaz — 3 years ago

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Contributed by Jb Audras — 3 years ago
(example taken from @dotmastaz’s feedback)
Allow SVGZ mime type:
```
<?php
function svgz_mime_types( $mimes ) {
        // SVGZ allowed mime types.
        $mimes['svgz'] = 'application/x-gzip';
        return $mimes;
}
add_filter( 'upload_mimes', 'svgz_mime_types' );
?>
```
And if you want to know what is your real file mime type, you can use this service: https://wp-check-mime-type.com/.
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1

Contributed by Justin Kopepasah — 2 years ago

Filter the upload mime types to allow JSON files.

<?php
/**
 * Allow JSON file uploads to WordPress media library.
 *
 * Filters the uploads mime types to allow JSON files.
 *
 * @param array $types Currently allowed types.
 *
 * @return array Filtered types.
 */
add_filter(
	'upload_mimes',
	function( $types ) {
		return array_merge( $types, array( 'json' => 'text/plain' ) );
	}
);

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Contributed by Shoaib Ali — 2 years ago
Allow CSV file type.
```
function extend_mime_types( $types ) {
	$types['csv'] = 'text/csv';
	return $types;
}
add_filter( 'upload_mimes', 'extend_mime_types' );
```
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Contributed by thejaydip — 1 year ago
Allow uploading fonts files.
```
function wpdocs_allow_mime_types( $mimes ) {

		$mimes['ttf']   = 'font/ttf';
		$mimes['woff']  = 'font/woff';
		$mimes['woff2'] = 'font/woff2';
	}
	return $mimes;
}

add_filter( 'upload_mimes', 'wpdocs_allow_mime_types' );
```
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Contributed by Мария Рангелова — 6 months ago
```
// To upload photos in format WebP

function wpdocs_custom_mime_types( $mimes ) {
	
	// New allowed mime types.
	$mimes['webp'] = 'image/webp';

	return $mimes;
}

add_filter( 'upload_mimes', 'wpdocs_custom_mime_types' );
```
If you work locally, for example on XAMPP, you should also include extension=gd in php.ini, just uncomment it, removing ; in front of it.
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