Unzip Utility For Mac Pkzip

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Sometimes when you want to download a file, you might notice that it comes in a .zip format. If you don’t know what it is and are having trouble opening it, you’ve come to the right place! This article is going to teach you how to unzip files using default applications in Windows and macOS as well as third-party programs.

  • Using SecureZIP for Mac Unzipping ZIP Files. To open (also known as extract) a ZIP archive and put the files in a folder: Note: All SecureZIP functions are available from the Services menu within Finder. Double-click the ZIP you want to open OR control-click on the file and select SecureZIP: Extract Archive.
  • Available for free both to individuals and for commercial use, PKZIP features an intuitive interface that allows users to decrypt and open ZIP files simply by clicking on a file name or dragging and dropping a file onto the ZIP Reader icon.
  • WinZip is the world's #1 choice when working with large files – zip, unzip, protect, share and more. Zip and unzip files instantly. Protect files with banking-level AES encryption.
  • ZIP extension desingates a popular archiving format, mainstream on Microsoft Windows systems. ZIP format specifications are maintained by PKWare which originally developed the format as part of Phil Katz's compression utility PKZip (1989), and it is currently undergoing evaluation for ISO/IEC standardization.
  • Two Ways to Unzip Files

What is a .zip File?

PKZIP Command Line is a compact tool that allows you to use the PKZIP functions by creating batch files or entering commands in the console. The application is designed for the users that want.

A .zip file is an archive containing one or more files that have been compressed to reduce its size. Zipping a file is useful to spare up to 80% or more storage space.

Additionally, zipping big files enables users to upload and send them faster over the internet, simultaneously decreasing the chance of it being corrupted. Users can also use .zip format to encrypt their data for extra security.

There is plenty of software that can be used to unzip files. However, your computer is generally already equipped with a built-in program that can perform the task just fine.

Two Ways to Unzip Files

There are two ways to extract zipped files: either by using your operating system’s built-in software or by using third-party tools.

Regardless of what tool you use, it is a good practice to delete the .zip file after you extract its content because keeping both consumes more space.

1. Using an OS Built-In Tool

First, let’s take a look at how to extract files using native software found in Windows and macOS. Because you’re only using what your computer already has, there is no need to download another tool.

Windows

While it is possible to see the content of a zip file by double-clicking on it on Windows, you still need to extract the files to use it. The Windows default support for .zip goes by the name of Compressed (zipped) folders and here’s how to use it:

  1. Right-click the file that you want to decompress and choose Extract All.
  2. Choose the directory where you want to keep the extracted files and click Extract. It is optional to check the box underneath if you need to see the content immediately after the extraction is done.
  3. The files that were inside the .zip now can be found in the location you picked in step two.

macOS

Archive Utility is Mac’s built-in tool that handles the .zip format. To unzip a file, follow these steps:

  1. Double-click on the file you want to unzip.
  2. Once extracted, the file will appear in the same folder as its archive.

If you want to change the default folder location, access Internal Hard Drive -> System -> Library -> Core Services -> Archive Utility. Once there, select Preferences and set the location by clicking Save Expanded Files.

If you’re using Linux, read here for an in-depth guide on how to unzip your file.

2. Using a Third-Party Tool

While it is not necessary to download third-party tools to extract a .zip file, they do come with added features that allow you to customize, password-protect, and repair your zip files.

Below are our recommendations.

7-Zip

This file archiver is a free and open-source program with a 2-10% higher compression rate compared to WinZip and PKZip. It also has its own 7z extension that compresses data 30-70% better than the .zip format.

Among the many features are secure encryption and an easy-to-use file manager. Plus, it is also localized for 87 languages.

Although it is only available for Windows, it also has a port for Linux/Posix command line called p7zip.

Pkzip unzip

To unzip with this tool, follow these steps:

  1. Right-click on the file that you plan to extract. 7-Zip should be listed there after installation.
  2. Hover your mouse above the program name, and you will see a drop-down menu with multiple commands. Click Extract Files.
  3. In the next menu, choose the save location by clicking on the three dots, leave it be if you want it in the same folder as the original. Click OK.
  4. Alternatively, you can also choose Extract Here to immediately save your file in the archive’s location or Extract to [File Name] to make a folder out of the extracted data.

PeaZip

PeaZip is a Windows and Linux-supported free unzipping program that is compatible with over 180+ extensions. Among its best features are a powerful file manager and reliable security protection with two-step verification. Additionally, it also has a portable version that you can use without installing it.

Unzip utility mac

Using PeaZip on Windows is pretty straightforward and works the same as with the previous tool. The only differences are the name of the commands:

Pkzip
  • Extract – use to unpack your data to another location.
  • Extract here – saves the content inside the same location as the archive.
  • Extract here (smart) – used to create a standalone folder for the files.

Zipware

Just like 7-Zip, Zipware is also a Windows-only extractor. However, it has a few features that stand out, such as a streamlined file manager, a password manager, conversion of all compatible formats to .zip, .exe, or .7z and a virus scan.

Unzip Utility Mac

Again, decompressing using this tool follows the same method as the previous ones with slightly different options:

  • Extract to this folder – for immediate extraction to the location of the zip.
  • Extract to this folder + Filenames – for a similar effect but with a folder made out of the file.
  • Extract to other… – opens a drop-down menu to choose another location.

Unzip Utility For Mac

Conclusion

A zip file is an archiving method that is useful to save storage since it compresses file sizes.

You can unzip files either using default Windows and macOS settings or by utilizing third-party software such as Zipware, PeaZip and 7-Zip.

Pkzip Unzip

The process itself takes only a few clicks, so you can have the task done in no time.











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PeaZip is a free cross-platform file zipper utility that provides an unified portable GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX... free alternative to WinRar, WinZip and similar proprietary software.
- Create 7Z, ARC, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP files
- Open and extract (unzip) ACE, ARJ, CAB, DMG, ISO, LHA, RAR, UDF, ZIPX files and more,
200+ archive types supported
Features of PeaZip includes:
archives opener and extractor, batch zipping and extraction of multiple archives at once, convert zipped files, create self-extracting archives, split and join files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hash and checksum, export job definition as script.


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ZIP is the default archive format for PeaZip free archiver, being a good, fast general purpose archiving format that can be handled by most archive managers - it is chosen as default format by most other file archivers for the same reason.
Optimized Deflate algorithm used in PeaZip improves ZIP format performances on modern multi core, multi threaded machines, and provides a slightly improved compression over classic Deflate implementation, and creates archives retaining full compatibility with ZIP standard.
ZIP extension desingates a popular archiving format, mainstream on Microsoft Windows systems.
ZIP format specifications are maintained by PKWare which originally developed the format as part of Phil Katz's compression utility PKZip (1989), and it is currently undergoing evaluation for ISO/IEC standardization.
Various file spanning schemes are employed by differnt utilities for creating split multi-volume zip archives, most popular is raw file spanning (as inplemented in 7-Zip, or Unix / Linux 'split' command) and WinZip's custom spanning.
Newer archive formats like 7Z (7-Zip / p7zip), RAR (WinRar), and ACE (WinAce) have gained popularity and introduced several improvements (some of them later brought into ZIP format) like better compression ratio, recovery records, strong file encryption etc. - often at cost of inferior speed and higher memory requirements compared to faster, lightweight Deflate compression used in ZIp format.
Anyway, ZIP format retained much of its popularity earned in several years of widespread use due its ubiquitous support from many dedicated software alternatives to WinZip, as well as basic built-in support (extraction and often creation, i.e. Windows' 'add to compressed folder' command) in most of modern operating systems, being .zip file format specifications released in public domain, which makes unzipping possible on almost all PC and devices.
When is ZIP format recommended
Zip is a good choice anytime it is important to keep the archive compatible with most archive managers recipients may use, making it also an excellent choice for content distribution, being unzip generally possible on any platform. For same reson it is also recommended for long term archive / backup storage, as a such obiquitous format (with public domain specifications) is unlike to be unsupported in any conceivable scenario.
Also, ZIP is usually significantly faster than more powerful compression formats, both for archiving and for extraction steps.

Maximum number of files in a ZIP archive

ZIP format standard limits the number of files in archive to 2^16 (64 K files maximum), ZIP64 standard extension, supported by PeaZip, allows 2^32 files per archive (4 G files as maximum number)

Maximum total size of ZIP archive

A standard ZIP file can be up to 2^32 bytes in size (4 gigabyte of total size of the archive), ZIP64 standard allows the maximum archive size of 2^64 bytes (16 exabyte of total zip size), exceeding the current needs and limitation of most of current implementations of filesystems.
Please note some old zip archivers supports up to 2 GB for maximum archive size (and for max size of each input file), using a signed integer for representing the 32-bit wide size variable.

Maximum size of each file in a ZIP archive

ZIP format can accept input files up to 2^32 (4 GB) in size, while ZIP64 can archive files as large as 2^64 bytes in size (16 exabytes, each), far exceeding current needs and limits of common filesystems.

Zip format standard and variants (ZIPX, JAR, CAB, IPA, APK, COMPOUND...)


ZIP compression is quite fast and it's based on Deflate algorithm (like in GZip format); alternatively Deflate64, BZip2, LZMA, and PPMd based compression is possible, and supported by PeaZip.
Recently WinZip (first GUI zip file utility on Microsoft Windows platform, and still one of most popular 'zipper' program) introduced some new compression algorithms and a new AES based encryption scheme, Advanced Encryption (AE-1, released in 2003, and AE-2 revision in 2004).
AE-encrypted archives as well as classic ZipCrypto-encrypted archives are supported by PeaZip (read and write), the application is also capable to read PKWare's AES encrypted zip archives, standard introduced in 2003 with PKZip 6.0 Professional Edition.
Since 2008 WinZip designed a new archival format, distinguished by ZIPX extension, supporting newer compression and encryption features, but ZIP format retained most of its popularity as common, 'standard' way to pack and share data.
Many special-purpose variants were built on zip format structure (Android APK, Java JAR, Apple IPA, EPUB) or using Deflate compression (Microsoft CAB and MS Office OPC 'Open Packaging Conventions' and COMPOUND file types).
For some of these file types PeaZip features a warning when trying to edit archive content (unless they are renamed as .zip files, and treated as plain archives), only browsing and extraction, because file format specifications involves to create / maintain special purpose meta-data fields which are out of the scope of a general-purpose file archiver - those files should be edited with specialized programs to correctly update required meta-data.
Read more: how to create, open, extract ZIP files with PeaZip free archiver

External online resources: ZIP file formaton Wikipedia, PKWare PKZip, Deflate algorithm specs






.ZIP

Phil Katz, 1989
ZIP: 64 K max number of files, 4 GB max size (archive, files)
ZIP64: 2^32 max number of files, 2^64 bytes max size (archive, files)

SPEED

Zip format features excellent speed either for zip and unzip operations. Deflate algorithm is light and fast for modern hardware, other supported compression algorithms are more resource demanding.







COMPRESSION RATIO

Deflate algorithm is inferior to modern, more powerful (and power demanding) compressors as 7Z or RAR. Modern ZIP software supports additional algorithms to close the gap (BZip2, PPMd, LZMA) but archives may result unreadable for older utilities.

ADVANCED OPTIONS

Zip format features good advanced archiving options. Recent standard format revisions provide efficent encryption standards and allows archiving large files (over 4GB). Lacks recovery records option available for RAR format.






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FAQ > Archive file types > What is ZIP file type

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