CPIO stands for 'copy in/out' and is a standard archival format used to bundle multiple files into a single file, making it easier for storage, transfer, and retrieval. The CPIO file structure consists of a header followed by the archived files, and each header includes the file name, size, ownership information, timestamps, and other metadata.What is a cpio file?UnZiper is an incredibly helpful and easy-to-use online tool that makes it possible to extract, compress, or convert compressed files in an instant. All you need is a web browser and UnZiper does the rest for you - quickly, easily and best of all, free! The advantages of using UnZiper are endless - you save time by not having to install any software, you don't have to worry about viruses as no downloads are required, and most importantly of all, you can do it all on demand with just a few clicks. UnZiper gives users the freedom to work with their compressed files when they need to without waiting around. It's fast, secure and reliable - making it ideal for anyone who needs to extract, compress or convert compressed files quickly.What is UnZiper?UnZiper supports any OS that can run a modern browser. We have tested it to work with Windows, MacOS, Linux (e.g. Ubuntu, Mint, Debian), Android, ChromeOS (Chromebook), iOS (iPhone, iPad & iPod Touch). Ensure you are using the latest version of one of the popular browsers (e.g. Chrome, Firefox, Safari, Opera, Edge).What operating system does UnZiper support?Max file size is limited by your device RAM. Theoretical size limit is 4GB.What is maximum file size supported by UnZiper?