Create stickers program for web site

The following sites have programs that can make stickers. I need a program to make stickers on my site from images I have on site or user's upload.
The following sites have sticker programs:
https://www.canva.com/create/stickers/
https://printify.com/make-your-own-stickers/
https://www.stickeryou.com/
https://www.makestickers.com/