Homebrew Question Is there any apps that can backup physical carts and downloaded dlc?

[bingbingBOPOMOFO]

Hi. The title basically says it all. I'm curious if there is any current homebrew software that allows for making local backups of physical cartridges. Also, I'm curious if there is a way to back up DLC as well?

What file extension do switch backups come in?

Thanks!

 

[kidkat210]

Your gonna want nxdumptool if you're on atmosphere.
If your on sx os, then use sxdumper