PNG IHDR ӟ sRGB pHYs + ~iTXtXML:com.adobe.xmp 2021-09-01 f584ccf3-69b3-492d-a3dd-45c2fac7e5a7 525265914179580 2 "全巻無料"調査 藤村明穂 Canva c6 IDATx$uYn\@ˀGG