https://blog.wongcw.com/2021/12/27/%e9%96%8b%e7%99%bc%e8%80%85%e4%bb%8b%e7%b4%b9%e6%96%b0%e7%a9%8e%e7%9a%84qoi%e5%9c%96%e5%83%8f%e6%aa%94%e6%a0%bc%e5%bc%8f-%e8%bc%83png%e6%9b%b4%e5%85%b7%e6%80%a7%e8%83%bd%e5%84%aa%e5%8b%a2/