{
 "id": "nullsoft-scriptable-install-system",
 "name": "Nullsoft Scriptable Install System",
 "category": "text",
 "identifiers": {
  "extensions": [
   "nsi"
  ],
  "puid": [
   "fmt/644"
  ],
  "wikidata": [
   "Q59537303"
  ]
 },
 "status": "readable",
 "summary": "NSIS (Nullsoft Scriptable Install System) is an open source system to create Windows installers. NSIS is script-based and although it has regular and well defined syntax, there are no magic numbers or header sequences. As such, there is no current means to identify a file as NSIS by binary sequence alone, so identification of this format is by extension only.",
 "tools": [
  {
   "name": "Q848317",
   "url": "http://nsis.sourceforge.net/",
   "reads": true,
   "writes": false,
   "license": "zlib License",
   "open_source": true
  }
 ],
 "projects": [
  {
   "name": "PRONOM fmt/644",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/644",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q59537303",
   "url": "https://www.wikidata.org/wiki/Q59537303",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}