function responsive_image_get_mime_type

Determines the MIME type of an image.

Parameters

string $image_style_name: The image style that will be applied to the image.

string $extension: The original extension of the image (without the leading dot).

Return value

string|null The MIME type of the image after the image style is applied, or NULL if not found.

File

core/modules/responsive_image/responsive_image.module, line 443

Code

function responsive_image_get_mime_type($image_style_name, $extension) {
  $extension = match ($image_style_name) {  ResponsiveImageStyleInterface::EMPTY_IMAGE => 'gif',
    ResponsiveImageStyleInterface::ORIGINAL_IMAGE => $extension,
    default => ImageStyle::load($image_style_name)->getDerivativeExtension($extension),
  
  };
  return \Drupal::service(MimeTypeMapInterface::class)->getMimeTypeForExtension($extension);
}