Home·File extensions

.cue

Disk images · application/x-cue

Opens with

Daemon Toolsfoobar2000

A whole disc captured as one file. Open it and it mounts just like the original disc.

MIME typeapplication/x-cue
CategoryDisk images
Opens in a browserNo
Plain textYes
Registered typeUnofficial (x-)

How to read this

  • An extension is a label, not the contents. Rename a file to .png and if the bytes inside are JPEG, it is still a JPEG.
  • A MIME type is how the internet names a file kind. Browsers look at that value, not the extension, to decide whether to display or download.
  • A MIME type starting with x- was never registered as a standard. Plenty are in wide use, but they are not official names.
  • Video extensions name a container. The same .mp4 may play on one device and not another, depending on the codec inside.

Frequently asked questions

Q. What is a .cue file?

It belongs to the disk images category and its MIME type is application/x-cue. The contents are plain text, so you can even open it in Notepad and read it.

Q. What opens a .cue file?

Daemon Tools, foobar2000 all handle it. In a browser it does not display — the browser downloads it instead.

Q. What is the MIME type of .cue?

application/x-cue. The first half, application, names the broad kind; the second half, x-cue, names the exact format. It starts with x-, which means it was never registered as a standard.

Q. Can I convert a .cue file to another format?

Yes — open it and re-save through a converter. Renaming alone changes only the label; the bytes stay put, and programs that check the real format may refuse to open it.

Q. My .cue file will not open.

First check that Daemon Tools is installed. If it still fails, the download may have been cut short, or the file may only be named .cue while holding a different format inside.

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