@aboood40091 updated his tool intended for those who wish to open the BNTX files used on Switch games!
BNTX Extractor allows you to extract 'binary textures', from files with the extension .bntx, which is used in many games on the Switch and saved in DDS format. @Aboood40091 had previously designed this for Wii-U been been updated and soon also GTX-Extractor and BFLIM-Extractor will be updated to handled Switch titles.
OFFICIAL SITE: --> https://github.com/aboood40091/BNTX-Extractor
Developer's Thread: --> https://gbatemp.net/threads/wip-bntx-extractor.478808/
NEWS SOURCE: [Switch] BNTX Extractor v0.3 disponible (via) Logic-SunRise