English

The NSP extractor Android tool processes Nintendo Switch NSP archives on Android devices to enable legitimate backups, preservation, and development workflows. It targets archivists, researchers, and developers who need to inspect, validate, or repurpose NSP content without relying on desktop tooling. The tool is designed to operate offline, relying on local storage and deterministic extraction results.\n\nConceptual workflow: read the NSP container, verify signature, parse content tables, and enumerate embedded files such as NCAs and CNMT entries. For each entry, the tool writes a byte-for-byte copy to a destination directory, preserving relative paths and producing a manifest when requested. Optional hash verification compares computed digests against provided references to ensure integrity.\n\nAudience value and differentiators: on Android, users can perform in-situ analysis without a PC, enabling field preservation and rapid test cycles. It supports content-type filtering (NCA vs metadata), meaning you can extract only what you need. It also generates an output manifest that documents extracted assets, sizes, and hashes, which boosts reproducibility and auditability. The architecture favors extension while keeping the core logic deterministic.\n\nCore features and use cases: required: NSP parsing, extraction to a directory, optional manifest and hash verification; optional: content-type filtering, file attribute preservation, and handling for encrypted NCAs (keys required). Use cases include offline backups, catalog inspection, build verification, and data preservation; it deliberately excludes DRM circumvention and UI concerns, focusing strictly on data processing.