How to open a .MDF file online
No burning, no mounting, no extra software to install.
Pick your .MDF file
Drag it in or click to choose it. It opens here in seconds.
See what's on it
Read the volume name, when it was made, the file systems it uses and whether it can start a computer.
Browse and save
Step through the folders, preview text and images, and download any single file you need.
About .MDF files
What a .MDF file is, and where it comes from.
An MDF file (Media Descriptor File) is a raw disc image created by Alcohol 120% or DAEMON Tools. It stores a bit-for-bit copy of a CD or DVD. Always paired with a companion .mds file, it mounts with the free DAEMON Tools Lite or converts to ISO for use in Windows 10/11 without extra software.
Programs that open .MDF files
| Full name | Media Descriptor File (Alcohol 120% / DAEMON Tools disc image) |
|---|---|
| Developer | Alcohol Soft |
| First released | Alcohol 120% disc image, early 2000s |
| Category | Archives |
| MIME type | application/octet-stream |
Related viewers
Open what you find on the disc.
Can I open a 4 GB+ .MDF file?
Yes. The viewer never loads the whole file. It reads the disc's directory structure piece by piece, so even large DVD and Blu-ray images open in a second.
How do I know if an ISO is bootable?
Look at the Boot panel. If the image has an El Torito boot record, we show whether it boots on classic BIOS PCs, on UEFI computers, or both.
I have a .bin and a .cue file. Which one do I open?
Open the .bin file: it holds the data. The .cue file is a small text file describing the tracks; drop it on its own to see the track list.
Can I browse a virtual machine disk (VHD, VMDK)?
Today we show the disk details and partition table. Browsing NTFS, ext4 and other file systems inside virtual disks is on our roadmap.
Is anything uploaded?
No. Your .MDF file is read directly from your device by your browser.
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