Extract text from NSI files
To convert your NSI file to another format, you need NSIS or other Developer software.
To convert other file formats to the "Installer Source Code" file type, you need software like NSIS or a similar tool.
The .NSI extension most frequently identifies a Nullsoft Scriptable Install System (NSIS) script. These are plain text configuration files used to automate the creation of Windows installers. While .NSI files contain all the logic, UI definitions, and file instructions needed to install software, they are not executable on their own. A common problem for users is downloading an .NSI file expecting a functioning installer, only to find it opens in a text editor or not at all. To function as an installer, these scripts must be compiled into a binary EXE format using the NSIS Compiler.
For developers or curious users who simply want to inspect the code without installing the compiler ecosystem, the most practical conversion is to TXT or opening the file directly in a source code editor like Notepad++ or Visual Studio Code.
In rare gaming contexts, an .NSI file may be a proprietary Nintendo Script Information file used in titles like the Naruto Shippuden series. These are binary data files strictly for the game engine and cannot be converted to human-readable text. If your file is not a text script, it is likely this obscure game format, which has no standard conversion targets outside of specific modding tools.
Convert.Guru analyzes your NSI file, detects the exact format, and lets you read the text inside.
Users also converted ELD, ZS and RVB files.
If you want to convert NSI file to JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO, RS or SWIFT, you can use NSIS or similar software from the "Windows Installer Script" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to NSI, try NSIS or another comparable tool in the "Windows Installer Script" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our NSI converter.