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Compresses and decompresses Nintendo Switch NSP and XCI files to NSZ and XCZ, SuperNSP files included. It is one program for Windows, macOS and Linux, with a window and a command line compatible with nsz.

_{❤️ Free and open source, and it will stay free. If it saves you time, a coffee helps keep it going.}

Important

NXPress contains no keys, no games and no copyrighted content, and it never downloads them. Use it only with backups of games you own. It reads the files with your own prod.keys, dumped from your own console; keys are never included, uploaded or shared. Never post your keys anywhere, also not in issues, logs or screenshots.

Start here

• Installation: the downloads, macOS, Linux and the portable copy
• Keys: where NXPress looks for your prod.keys
• Tour of the window: each section, the list and the settings

Guides

• Compression: solid or in blocks, the levels, measuring and how every file is checked
• Compatibility: which installers and emulators read each format
• Command line: the options, the ones of nsz and examples

Help

• FAQ
• Troubleshooting
• Report a problem: Copy report pastes the result of every file