去水印

http://www.1ppt.com/

https://drive.google.com/drive/folders/1uRXg_krKHPrQneI3F2GNcSVRoCgkqESr

https://blog.mimvp.com/skill

https://www.playezu.com/taoke

https://www.aigei.com/

https://www.dogecloud.com/

https://streamja.com/

https://diyforfun.cn/

https://bgeraser.com/

http://www.pdfdo.com/image-to-txt.aspx

https://www.stickpng.com/

https://www.uipuzi.com/