$file->bw()
Converts the image to black and white
$file->bw(): Kirby\Cms\FileVersion|Kirby\Cms\File|Kirby\Filesystem\Asset
Return types
Kirby\Cms\FileVersion
orKirby\Cms\File
orKirby\Filesystem\Asset
Parent class
Examples
if ($image = $page->image()) {
echo $image->bw()->html();
}