Crop Photos with Cropper.js

#[Route('/cropperjs')]
public function cropper(CropperInterface $cropper, Request $request)
{
    $imagePath = $this->getParameter('kernel.project_dir').'/public/uploads/some_file.png';
    $crop = $cropper->createCrop($imagePath);

    $form = $this->createFormBuilder(['crop' => $crop])
        ->add('crop', CropperType::class, [
            'public_url' => '/uploads/some_file.png',
        ])->getForm();

    $form->handleRequest($request);
    if ($form->isSubmitted() && $form->isValid()) {
        // save cropped image contents to a file
        $cropped = $crop->getCroppedImage();
        $croppedThumbnail = $crop->getCroppedThumbnail(200, 150);
    }

    // ... render template
}