JPG、GIF以及PNG的比較

http://mingwang0824.pixnet.net/blog/post/27833076-%5Bweb%5Djpg-%E3%80%81gif%E3%80%81png-%E4%B8%89%E7%A8%AE%E6%A0%BC%E5%BC%8F%E7%9A%84%E6%AF%94%E8%BC%83