Imagick::save

public function save($file, $quality = 95, $format = null)
{
	if ($this->image === null)
	{
		return false;
	}

	$prefix = "";
	if ($format !== null)
	{
		$format = static::convertFormat($format);
		if($format !== null)
		{
			$prefix = "{$format}:";
		}
	}

	$this->image->setImageCompressionQuality($quality);

	if ($format === "gif" || ($format = $this->image->getImageFormat()) === "GIF" || $format === "GIF87")
	{
		//strange artefacts with transparency - we limit the palette to 255 colors to fix it
		$this->image->quantizeImage(255, Imagick::COLORSPACE_SRGB, 0, false, false);
	}

	if ($this->animated)
	{
		return $this->image->deconstructImages()->writeImages($prefix.$file, true);
	}
	else
	{
		return $this->image->writeImage($prefix.$file);
	}
}