Extract ISO Files

An ISO archive is what’s called a disc image - an exact copy of a CD or a DVD disc. ISO files are typically created as CD/DVD backups, but they can also be made “from scratch” using a specialized editor like WinISO. An ISO file can only store a single track of data, so it doesn’t work for music CDs and a few more arcane CD/DVD types.

It may help to think of the .iso archive like a kind of archive because it usually contains a number of files and folders. However, unlike general purpose archives (e.g. ZIP or RAR), the ISO archive saves everything in uncompressed form. Some proprietary disc archive formats like UIF files and .daa format also support compression, but they’re not as widespread as ISO.

To extract an ISO image you will need to install one of the many ISO file tools. There’s a multitude of applications that can extract the ISO format, but most of them are either very expensive or simply lack any defining traits that would let you make an informed choice. So which one should you pick? Depending on your goal, there are two applications that I would recommend.

First, if you only need to open the file, use 7-zip. It’s a free open-source archiver that can open ISO DVD images. It will let you access the contents of the DVD image, but that’s it - 7-zip can’t record, mount or create new .iso archives. It’s a neat no-frills application and it supports Windows and Mac computers.

If you need a bit more functionality you should probably get a full-blown ISO image software like PowerISO. Yes, it costs money, but it will let you do practically anything with an ISO or UIF file - open it, modify, load it in a virtual drive, convert to a different format, and burn to a physical disc. PowerISO only supports Windows, though.

To summarize, ISO is a widely known, open CD/DVD archive file that is supported by most DVD applications. Some general-purpose archiving tools can also extract .iso images, but they generally can’t do anything else with them.