Online softwares

在线 JPG 调整尺寸

https://www.iloveimg.com/zh-tw/download/wzpzd67w2A5rt26ffAbq1vtApff8brbyxhhrbf46cjbpt614zf118wn01zgn0572rnv4hwmzsq4yrltw0qvddlxs11pAly0lnjwg8g8pvcrgm0tg5j5csq6fz536drnc7kng18rcghnh6swsfrn29b4rkv94jlAf3z7hy4cmykgfc7j2Afdq/12

乱码恢复

https://www.ff98sha.me/tools/messycode/

恢复后可网页搜索理应出现的文字，比如搜索“的”。

QQ音乐解码

https://ncm.worthsee.com/
# and then
https://cloudconvert.com/ogg-to-mp3

识别字体

https://www.souziti.com/

pdf to word

best is:

https://pdfcandy.com/cn/pdf-to-word.html