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How to Extract Zip Files. In this Article: On Windows On Mac On iPhone On Android Community Q&A This wikiHow teaches you how to move files from a compressed, or 'ZIP', folder into an ordinary, uncompressed folder on your computer. This free utility for Mac enables you to extract files on your Mac. This is one of the best extraction tool for Mac and it supports an amazing amount of formats. The application is available for free on the Mac App Store and even comes on the most popular list of free application in the Mac App Store. How to Install Software from DMG Files on a Mac 21 September, 2007 by Tom Harrison in mac os x A.DMG file is a container file commonly used to distribute applications for Mac OS X. Installing software from one of these requires you to mount the image and move its contents to your computer’s “Applications” directory. Unzip Mac utility can be used to zip and unzip Mac files on all popular versions of Mac Machines such as Mac OS X 10.5, Lion, Leopard and Snow Leopard etc. It supports to unzip files like documents, images, media files, folders.
Free and low-cost third-party compression apps are available for the Mac, but Mac OS X and macOS both come with a built-in compression system that can zip and unzip files. This integrated system is relatively basic, which is why many third-party apps are also available. A quick look at the Mac App Store revealed more than 50 apps for zipping and unzipping files.
Before you download a third-party app, learn how to compress and decompress files and folders using the Archive Utility built into the Mac. It's a basic tool, but it gets the job done.
OS X and macOS Compression
The Archive Utility includes options that you can modify, but don't bother to look for it in the Applications folder; it's not there. Apple hides the utility because it's a core service of the operating system. Apple and app developers use core services to enhance an application's capabilities. For example, Mac Mail uses the Archive Utility to compress and decompress attachments; Safari uses it to decompress files you download.
The Archive Utility has settings you can modify, but most users never need them. Right now it is a better idea to get used to the utility as configured in its default state. You can always try new settings later.
The Archive Utility may be hidden away, but that doesn't mean you can't access its services. Apple makes zipping and unzipping files and folders extremely easy by selecting them in the Finder and using the Archive Utility.
Zipping a Single File or Folder
Open a Finder window and navigate to the file or folder you want to compress.
Control-click (or right-click if you have a mouse with that capability) the item and select Compress from the pop-up menu. The name of the item you select appears after the word Compress, so the actual menu item reads Compress 'item name.'
The Archive Utility zips the selected file. The original file or folder is left intact. The compressed version is in the same folder as the original file (or on the desktop, if that's where the file or folder is located), It has the same name as the original file with a .zip extension.
Zipping Multiple Files and Folders
Compressing multiple files and folders works about the same as compressing a single item. The only differences are in the names of the items that appear in the pop-up menu and the name of the zip file that is created.
Open the folder that contains the files or folders you want to compress.
Select the items you want to include in the zip file. Shift-click to select a range of files or Command-click to select nonadjacent items.
After you select all the files and folders you want to include in the zip file, right-click or Control-click on any one of the items and select Compress from the pop-up menu. This time, the word Compress is followed by the number of items you selected, such as Compress 5 Items.
When the compression is finished, the items are stored in a file called Archive.zip, which is located in the same folder as the original items.
If you already have an item in that folder named Archive.zip, a number is appended to the new archive's name. For example, you could have Archive.zip, Archive 2.zip, Archive 3.zip, and so on.
One curious aspect of the numbering system is that if you delete the Archive.zip files at a later date, and then compress multiple files in the same folder, the new Archive.zip file has the next number in the sequence appended to it; it doesn't start over. For example, if you compress three groups of multiple items in a folder, you end up with files called Archive.zip, Archive 2.zip, and Archive 3.zip. If you delete the zip files from the folder, and then zip another group of items, the new file is named Archive 4.zip, even though Archive.zip, Archive 2.zip, and Archive 3.zip no longer exist in that folder.
Unzipping a File
Unzipping a file or folder couldn't be easier. Double-click the zip file, and the file or folder decompressed in the same folder as the compressed file.
If the item you are decompressing contains a single file, the new decompressed item has the same name as the original file.
If a file with the same name is already present in the current folder, the decompressed file has a number appended to its name.
Folder for Multiple Unzipped Items
When a zip file contains multiple items, the unzipped files are stored in a folder that has the same name as the zip file. For example, if you unzip a file called Archive.zip, the files are placed in a folder called Archive. This folder is located in the same folder as the Archive.zip file. If the folder already contains a folder called Archive, a number is appended to the new folder, such as Archive 2.
Apps for Compressing or Decompressing Mac Files
If you want more file compression features than Apple offers in its Archive Utility, third-party apps are available. They include:
A file with the ZIP file extension is a ZIP Compressed file and is the most widely used archive format you'll run into.
A ZIP file, like other archive file formats, is simply a collection of one or more files and/or folders but is compressed into a single file for easy transportation and compression.
The most common use for ZIP files is for software downloads. Zippinga software program saves storage space on the server, decreases the time it takes for you to download it to your computer, and keeps the hundreds or thousands of files nicely organized in the single ZIP file.
Another example can be seen when downloading or sharing dozens of photos. Instead of sending each image individually over email or saving each image one by one from a website, the sender can put the files in a ZIP archive so that only one file needs to be transferred.
How to Open a ZIP File
The easiest way to open a ZIP file is to double-click on it and let your computer show you the folders and files contained inside. In most operating systems, including Windows and macOS, ZIP files are handled internally, without the need for any extra software.
However, there are many compression/decompression tools that can be used to open (and create!) ZIP files. There's a reason they're commonly referred to as zip/unzip tools!
Including Windows, just about all programs that unzip ZIP files also have the ability to zip them; in other words, they can compress one or more files into the ZIP format. Some can also encrypt and password protect them. If I had to recommend one or two, it'd be PeaZip or 7-Zip, both excellent and completely free programs that support the ZIP format.
If you'd rather not use a program to open a ZIP file, lots of online services support the format, too. Online services like WOBZIP, Files2Zip.com, and B1 Online Archiver let you simply upload your ZIP file to see all the files inside, and then download one or more of them individually. Another is ZIP Extractor, which can extract some or all of the files in the ZIP archive directly to Google Drive.
I recommend using an online ZIP opener only if the ZIP file is on the small side. Uploading a large ZIP file and managing it online will probably take you more time and energy than just downloading and installing an offline tool like 7-Zip.
You can also open a ZIP file on most mobile devices. iOS users can install iZip for free, and Android users should be able to work with ZIP files via B1 Archiver or 7Zipper.
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Opening Other Kinds of ZIP Files
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ZIPX files are Extended Zip files that are created by and opened with WinZip version 12.1 and newer, as well as PeaZip and some other similar archive software.
If you need help opening a .ZIP.CPGZ file, see What Is a CPGZ File?.
How to Convert a ZIP File
Files can only be converted to something of a similar format. For example, you can't convert an image file like JPG into an MP4 video file, anymore than you can convert a ZIP file to PDF or MP3.
If this is confusing, remember that ZIP files are just containers that hold compressed versions of the actual file(s) you're after. So if there are files inside a ZIP file that you want to convert — like for a PDF to DOCX or MP3 to AC3 — you must first extract the files using one of the methods described in the section above, and then convert those extracted files with a file converter.
Since ZIP is an archive format, you can easily convert ZIP to RAR, 7Z, ISO, TGZ, TAR, or any other compressed file, in two ways, depending on size:
- If the ZIP file is small, I highly recommend using the Convert.Files or Online-Convert.com free online ZIP converter. These work just like the online ZIP openers already described, which means you'll need to upload the whole ZIP to the website before it can be converted.
- To convert larger ZIP files that would take much longer to upload to a website, you can use Zip2ISO to convert ZIP to ISO or IZarc to convert ZIP to lots of different archive formats.
If none of those methods work, try one of these Free File Converters for Occasionally Used Formats to convert the ZIP file to another file format. The one I particularly like is Zamzar, which can convert ZIP to 7Z, TAR.BZ2, YZ1, and other archive formats.
More Information on ZIP Files
If you've password protected a ZIP file but then forgot the password, you can use a password cracker to remove it to regain access to your files. One free program that uses brute force to remove a ZIP password is ZIP Password Cracker Pro.
Some ZIP files may have a file name with a different file extension before the final 'zip' extension. Just keep in mind, like with any type of file, it's always the very last extension that defines what the file is.
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For example, Photos.jpg.zip is still a ZIP file because JPG comes before ZIP. In this example, the archive is probably named this way so it's quick and easy to identify that there are JPG images inside the archive.
Some backup software tools will create file backups in the ZIP format so that they're compressed to save space, collected together for easier retrieval, and contained in a common format so that the backup can be opened even without the original backup software. One such program that does this is COMODO Backup.
To make a ZIP file in Windows, right-click the files and/or folders that should be in the archive and then choose Send to > Compressed (zipped) folder. To zip up files/folders in macOS, right-click them and select Compress <number> Items from the menu to make an Archive.zip file.
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A ZIP file can be as small as 22 bytes and as large as around 4 GB. This 4 GB limit applies to both the compressed and uncompressed size of any file inside the archive, as well as to the total size of the ZIP file.
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ZIP's creator Phil Katz' PKWARE Inc. has introduced a new ZIP format called ZIP64 that raises the size limitation to 16 EiB (around 18 million TB). See the ZIP File Format Specification for more details.