Spatie\Browsershot\Browsershot::save PHP Method

    public function save($targetFile)
    {
        if ($targetFile == '') {
            throw new Exception('targetfile not set');
        }
        if (!in_array(strtolower(pathinfo($targetFile, PATHINFO_EXTENSION)), ['jpeg', 'jpg', 'png'])) {
            throw new Exception('targetfile extension not valid');
        }
        if ($this->url == '') {
            throw new Exception('url not set');
        }
        if (filter_var($this->url, FILTER_VALIDATE_URL) === false) {
            throw new Exception('url is invalid');
        }
        if (!file_exists($this->binPath)) {
            throw new Exception('binary does not exist');
        }
        $this->takeScreenShot($targetFile);
        if (!file_exists($targetFile) || filesize($targetFile) < 1024) {
            throw new Exception('could not create screenshot');
        }
        if ($this->height > 0) {
            $imageManager = new ImageManager();
            $imageManager->make($targetFile)->crop($this->width, $this->height, 0, 0)->save($targetFile, $this->quality);
        }
        return true;
    }