If you have a hacked 3DS, you can use the GodMode9 tool to "dump" your physical cartridges directly into a decrypted format readable by emulators.
This gives you a playable ROM for emulators without re-downloading anything illegally. where to find decrypted 3ds roms
Use search terms like "3DS Decrypted Citra Set" or "Nintendo 3DS Complete Collection." If you have a hacked 3DS, you can
: A reliable legal gray area that hosts massive "Redump" and "No-Intro" collections. Look for "Nintendo 3DS Decrypted Citra" collections. Downloads here are safe but can be slower than dedicated mirrors. Look for "Nintendo 3DS Decrypted Citra" collections
This is a popular lightweight PC tool. You simply place your encrypted files in the same folder as the executable, run the program, and it outputs a decrypted version ready for Citra. A Note on Safety and Legality When searching for ROMs, always follow these safety rules: