Opening an NSI File

The NSI file type is primarily associated with NSIS.

NSI	File extension: NSI
	File type:	script file

What is an NSI file?

NSI files mostly belong to NSIS. NSI Files are text-based scripts used by the NSIS (Nullsoft Scriptable Install System) to control software installations.
They work as follows:

Installation Commands: The file contains commands that copy files, create shortcuts, and adjust system settings during installation.

Editability: You can open an NSI file in any text editor (such as Notepad or Notepad++) to view or modify its content.

Compilation: After editing, the script is compiled with the NSIS compiler to create an executable installer. For more details, visit the NSIS website.

Other use: Some records refer to these files as a "Naruto Shippuden Image." This is rarely seen and is not the typical purpose of an NSI file.

How to open NSI files

You need a suitable software like NSIS to open an NSI file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your NSI file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a NSI file directly in the browser:. Just drag the file onto this browser window and drop it.

Online NSI Text Viewer

Choose your .nsi file to view

or drag and drop it here

Online File Viewer

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How to extract texts from NSI files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

You can extract texts from NSI file or capture a preview screenshot using our online NSI file viewer:

Just click the "Choose your .nsi file to view" button on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Your file will be converted and downloaded.

Programs that open and convert NSI files:

NSIS
See the previous paragraphs to learn more about the main application. NSI files are often referred to as NSIS developers because this type of file is primarily created or used by this software.
Install System (Script) by Nullsoft
Program ID is NSISFile
NewsStand Reader by NewsStand, Inc.
Symantec Shared File by Symantec Corporation

NSI file format:

To view or edit NSI files you need to know the file format, because it determines how the data in this file is stored. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. File extension, signature and file format must match; otherwise errors will occur when the file is opened. When there is a problem with a file, the first step to solving it is to determine the file format. Below is our analysis of the NSI files:

NSI is rarely used as a file extension and includes different formats for the applicable programs. The file formats most commonly found in NSI files are:

45% of all NSI files are NSIS script files. These files are text files, so they contain words and text. The files are 4 KB to 15 KB in size, with a median of 6 KB. The file type is old but is used even today. The following keywords are characteristic: script, NSIS, Installer, define and This. A common filename is Installer.nsi or setupssh.nsi. Files like these are about mosquitto and install.
10% of all NSI files start with the bytes !include crucial for this file format. These files are text files, so they contain words and text. The average file size is 5 KB with most files being between 2 KB and 5 KB in size. The following keywords are characteristic: include, Name and OutFile.

All the rest of the NSI files (45%) have different formats. These files are often connected to portable, photoshopcs, script or setup. If you want to find out which format your NSI file belongs to, just click on the button "Choose your .nsi file to view".

Technical Data for NSI File Extension

File classification:

Developer

Program ID:

NSISFile

Related files:

nsh, msi, nis, exe, zip, txt, sav, milk, maki, cmf, dll, ini

Mime type:

text/x-nsis, application/octet-stream, text/plain

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: NSIS.Script
EXEFile: notepad.exe %1

ProgramID: NewsStand.Reader.Index
EXEFile: %ProgramFiles%\NewsStand\Reader\ANSReader.exe /Quiet %L

an nsi script file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with NSI files

Associate the NSI file extension with the correct application.
Update your software that should actually open script files. Because only the current version supports the latest NSI file format. Search, therefore, e.g. on the manufacturer website after an available NSIS update.
To make sure that your NSI file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .NSI file online - secure, fast, and no downloads needed.