convert png to pdf using PDFfiller PHP Client

When you need to convert your PNG image to a PDF document, use the PDFfiller converter. After you convert the image to a PDF, you can edit it, add fillable fields, send for signatures and publish it on your site.
          
              
                    PDFfiller\OAuth2\Client\Provider\Document::download();

$uploader = new Uploader($provider, Document::class);
$uploader->type = Uploader::TYPE_MULTIPART;
$uploader->file = __DIR__ . '/test.png';
$logo = $uploader->upload();

$contents = Document::download($provider, 54656456);