.PKG

.PKG File Extension

Learn what a .pkg file is, what it is used for, which programs can open it, and how to convert or troubleshoot this file format.

Executable File Extension Guide 391 Searches
.PKG
macOS Installer Package

Quick Facts

Basic information about this file format

Extension
.PKG
File Type
macOS Installer Package
Category
Executable
Best first step
Use compatible software

Quick Summary

A practical overview of the .pkg file format

A .pkg file is a package installer used on macOS. It's essentially an archive containing the files and instructions needed to install software, fonts, drivers, or other resources on a macOS system. These packages are often used to distribute applications, updates, and other software components. The…

File extension .PKG
File type macOS Installer Package
Category Executable
Recommended action Open with a trusted compatible app

How to open a .pkg file

Start with a trusted app that supports this format

  • Check the file extension carefully and confirm that the file name really ends with .pkg.
  • Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
  • Update the application if the file was created by a newer version of the software.
  • Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.

What is a .pkg file?

File extension details and usage information

A .pkg file is a package installer used on macOS. It's essentially an archive containing the files and instructions needed to install software, fonts, drivers, or other resources on a macOS system. These packages are often used to distribute applications, updates, and other software components. The .pkg file format is a standard way to bundle all the necessary files and scripts into a single, easily distributable file. When a user double-clicks a .pkg file, the macOS Installer application launches and guides the user through the installation process. This process typically involves accepting a license agreement, selecting an installation location, and entering an administrator password if required. The package can contain pre-installation and post-installation scripts that perform tasks such as checking system requirements, creating directories, setting permissions, and configuring the installed software. The .pkg format is a crucial part of the macOS software distribution ecosystem, ensuring a consistent and reliable installation experience for users.

Software Compatibility

Programs that may open or work with .pkg files

Windows

Compatible applications

No specific software is listed for this platform yet. Try checking the file source, identifying the original application, or using a trusted universal file viewer when appropriate.

macOS

Compatible applications

Installer.app Compatible
Pacifist Compatible

Linux

Compatible applications

unar Compatible
7-Zip (via command line) Compatible

Mobile

Mobile applications

No specific software is listed for this platform yet. Try checking the file source, identifying the original application, or using a trusted universal file viewer when appropriate.

Can .pkg files be converted?

Options for saving or exporting this file to another format

In many cases, a .pkg file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.

  • Use the original software that created the file when possible.
  • Check whether the application supports exporting to common formats.
  • Be careful with online converters when working with private, business, or sensitive files.
  • If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .pkg file.

Why can't I open a .pkg file?

Common reasons this file type may not open correctly

Wrong software

The file may require a specific program that supports the .pkg format.

Incorrect extension

The file extension may have been renamed manually, even though the actual file format is different.

Corrupted file

The file may be incomplete, damaged during download, or transferred incorrectly.

Outdated app

Your software may need to be updated before it can open newer versions of this file format.

Frequently Asked Questions

Common questions about .pkg files

To open a .pkg file, use software that supports this file format.

  • Installer.app
  • Pacifist
  • unar
  • 7-Zip (via command line)

Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.

  1. Verify that the file extension is correct.
  2. Install or update compatible software.
  3. Try another application that supports this format.
  4. Check whether the file is corrupted, incomplete, or encrypted.

A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.

File safety tips

Use caution with unknown files

Only open files from trusted sources. Before opening a .pkg file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.