Hacking How Do I Make A WBFS File From This?

[godreborn]

I have a file from that iso site with extension .iso.dec . removing the dec makes it unrecognizable by wii backup loader. how do I make a wbfs from this? thanks!

nm, I think I figured it out.

 

[FancyNintendoGamer567]

.dec? Let me search that up.
This is what I can find. https://fileinfo.com/extension/dec