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%Start What Is a CPGZ File? GA
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REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Software & Apps > File Types
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He's been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire. lifewire's editorial guidelines Updated on September 11, 2020 Tweet Share Email Tweet Share Email File Types File Types Apps Windows MS Office Linux Google Drive Backup & Utilities Design Cryptocurrency A file with the CPGZ file extension is a Compressed UNIX CPIO Archive file.
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It's the result of a GZIP-compressed CPIO (Copy In, Copy Out) file. A CPIO archive is uncompressed, which is why GZIP is applied to the file—so that it can be compressed to save on disk space. In these archives might be software programs, documents, movies, and other types of files.
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TGZ is a similar format that compresses a TAR file (which is also an uncompressed file container) with GZIP compression. Tim Fisher
How to Open a CPGZ File
CPGZ files are typically seen on macOS and Linux operating systems. The ditto command-line tool is one way you can open one in those systems.
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However, if you're running Windows, we suggest trying PeaZip, 7-Zip, or some other file compression/decompression program that supports GZ compression.
How to Open a ZIP CPGZ File
One strange scenario where you may unexpectedly find a CPGZ file is when you're trying to open a ZIP file in macOS.
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The OS may create a new file with the .ZIP.CPGZ extension instead of actually giving you the contents of the ZIP archive. When you open it, you find the ZIP file again. Decompressing it gives you back a file with the .ZIP.CPGZ extension...and this loop continues on, however, many times you try opening it.
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One reason this may happen is because macOS doesn't understand what type of ZIP compression is being used on the file, so it thinks that you want to compress the file instead of decompress it. Since CPGZ is the default format used for compression, the file is just being compressed and decompressed over and over again. One thing that might fix this is to just download the ZIP file again.
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It may not be opening correctly if the download was corrupted. We recommend trying a different browser the second time, like Firefox, Chrome, Opera, or Safari. Some people have had success opening the ZIP file with The Unarchiver.
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Another option is to run this unzip command in a terminal: unzip location/of/zipfile.zip
If you go this route, be sure to change the "location/of/zipfile.zip" text to the path of your ZIP file. You could instead type "unzip" without the path, and then drag the file onto the terminal window to automatically write out its location.
If you go this route, be sure to change the "location/of/zipfile.zip" text to the path of your ZIP file. You could instead type "unzip" without the path, and then drag the file onto the terminal window to automatically write out its location.
How to Convert a CPGZ File
The best way to convert the files inside a CPGZ file is to first extract them out of it using one of the file decompressors from above.
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Once you have the contents isolated, you can use a free file converter to convert them to a different format. We say this because CPGZ is just a container format, meaning it contains other files inside it—it's not meant to be directly converted to a format like XLS, PPT, MP3, etc.
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For example, if you're trying to "convert" CPGZ to PDF, you need to instead use a file unzip tool like one we already mentioned. This will let you take out the PDF, which you can then treat like you would any other one and convert it using a document converter. The same is true if you want to convert CPGZ files to SRT, IMG (Macintosh Disk Image), IPSW, or any other file type.
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What you really need to do, instead of converting the CPGZ archive to those formats, is decompress the archive so that you can open those files normally. The same file decompression utilities we already mentioned can be used to open these CPGZ files, too.
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It's not necessary to convert one to other archive formats like ZIP, 7Z, or RAR since they're all used for practically the same purpose: to store files. However, if you want to, you can do this manually by just extracting the files out of the archive and then compressing them to ZIP (or another archive format) with a program like 7-Zip.
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Other Not enough details Hard to understand Submit More from Lifewire What Is a ZIP File? JAR File (What It Is & How to Open One) How to Open, Edit, and Convert LZH Files BZ2 File (What It Is & How to Open One) 7Z File (What It Is and How to Open One) XAR File (What It Is and How to Open One) ISZ File (What It Is and How to Open One) HQX File (What It Is and How to Open One) BSA File (What It Is & How to Open One) HFS File (What It Is & How to Open One) Z File (What It Is & How to Open One) 5 Best Free File Converters for Occasionally Used Formats FAT File (What It Is and How to Open One) DIRECTORY File (What It Is & How to Open One) DSK File (What It Is & How to Open One) TGZ & GZ Files (What They Are & How to Open Them) Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Cookies Settings Accept All Cookies
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