Opening a NUPKG File

The NUPKG file type is primarily associated with NuGet.

NUPKG	File extension: NUPKG
	File type:	source code zip package

What is a NUPKG file?

NUPKG files mostly belong to NuGet by Microsoft. NUPGK is a code package archive file used by the NuGet package manager. It allows developers to share reusable code and is mainly used for Visual Studio.

File structure: The file itself is a ZIP archive that contains compiled code, other files related to that code, and a descriptive manifest that includes information like the package's version number. Considering this, the contents of the file can be extracted by archive managers such as 7Zip, but this is not usually done as these files are not generally used by themselves.
Compatibility: NuGet was initially distributed as a Visual Studio extension, but due to it's popularity it was incorporated in the later versions allowing Visual Studio to natively support NUPGK (and NUPACK) files. PowerShell also supports the downloading of a NUPKG package directly from a website.
Distribution: Developers with code they wish to share do so by creating these NUPKG archives and publishing them to a public or private host. Consumers then obtain those packages from their respective hosts, import them into their projects, and then use their functionality. One of the more notable public hosts is NuGet's own central repository of over 100,000 unique packages.

How to open NUPKG files

You need a suitable software like NuGet to open a NUPKG 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 NUPKG file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a NUPKG file directly in the browser:. Just drag the file onto this browser window and drop it.

Online NUPKG Text Viewer

Choose your .nupkg file to analyze

or drag and drop it here

Online File Viewer

✈

Read our privacy guarantee in Filext’s terms and privacy policy

Please allow ads on our site

This helps us keep our servers running. Then re-upload your file to view it.

Click here to see how to disable the ad blocker for filext.com

Programs that open and convert NUPKG files:

NuGet by Microsoft
See the previous paragraphs to learn more about the main application. NUPKG files are often referred to as NuGet developers because this type of file is primarily created or used by this software.
Visual Studio (package) by Microsoft
Visual Studio is an integrated development environment for Windows and macOS. Its NuGet Package Manager saves a package in an NUPKG file. This file format is classified as Developer. Related links: An introduction to NuGet, NuGet, Install and use a package in Visual Studio (Windows only)
Visual Studio (source code zip package) by Microsoft
Microsoft Visual Studio is an integrated development environment designed for developing applications for Microsoft Windows, Windows Mobile, .NET Framework, Silverlight, websites, and web applications. Visual Studio is available for Windows and Mackintosh platforms. A NUPKG file is a code package used by NuGet - an extension for Visual Studio, used by developers to create and share packages for .NET projects. This file format is classified as Developer. Related links: Documentation, Microsoft Visual Studio on Wikipedia, Support

NUPKG file format:

Why is it important to know the file format? This is the only way to find out which program to use to open the file. The file format can be deduced from the file extension and the signature. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our analysis of the NUPKG files produces the following result:

The NUPKG extension is very commonly found and predominantly uses a uniform format. The following file formats are most commonly found in NUPKG files:

96% of all NUPKG files are based on the zip format, so several files are compressed and saved in one NUPKG file. Primarily 5 to 80 files are included. Common included file names are .signature.p7s, [Content_Types].xml, \_rels\.rels, \lib\, \package\, \package\services\ and \package\services\metadata\. Tip: If you rename the file ending to .zip and then double-click it, you see the included files and images. Most of these files are 6 KB to 26 MB in size. Several words can almost always be found in the files, e.g. _rels/.rels and Relationships. These files are attributed to microsoft, free, generator, core, hack, selenium, activities and client.

All other NUPKG files (4%) have no consistent format. Often described as system, data, common, itextsharp, analyzer, device, npgsql or panic. Just click the "Choose your .nupkg file to analyze" button on this page to find out what your NUPKG file is.

Technical Data for NUPKG File Extension

File classification:

Developer

Related files:

nuspec, nug, zip, releases, psmdcp, dll, metadata, txt, 7z, xml, vsix, exe, deb, fmw, rar, qdf, ab1, md, package, kmz

Related links:

Documentation, NuGet on Wikipedia

Mime type:

application/octet-stream

a nupkg source code zip package is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with NUPKG files

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