Scale down an image to fit a particular size and save a new copy of the image.

The PNG transparency will be preserved using the function, as well as the image type. If the file going in is PNG, then the resized image is going to be PNG. The only supported image types are PNG, GIF, and JPEG.

Some functionality requires API to exist, so some PHP version may lose out support. This is not the fault of WordPress (where functionality is downgraded, not actual defects), but of your PHP version.

• wp_get_image_editor()

$file string Required

Image file path.

$max_w int Required

Maximum width to resize to.

$max_h int Required

Maximum height to resize to.

$crop bool Optional

Whether to crop image or resize.

Default: false

$suffix string Optional

File suffix.

Default: null

$dest_path string Optional

New image file path.

Default: null

$jpeg_quality int Optional

Image quality percentage.

Default: 90

mixed WP_Error on failure. String with new destination path.

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

function image_resize( $file, $max_w, $max_h, $crop = false, $suffix = null, $dest_path = null, $jpeg_quality = 90 ) {
	_deprecated_function( __FUNCTION__, '3.5.0', 'wp_get_image_editor()' );

	$editor = wp_get_image_editor( $file );
	if ( is_wp_error( $editor ) )
		return $editor;
	$editor->set_quality( $jpeg_quality );

	$resized = $editor->resize( $max_w, $max_h, $crop );
	if ( is_wp_error( $resized ) )
		return $resized;

	$dest_file = $editor->generate_filename( $suffix, $dest_path );
	$saved = $editor->save( $dest_file );

	if ( is_wp_error( $saved ) )
		return $saved;

	return $dest_file;
}