Opening a QCOW File

The QCOW file type is primarily associated with QEMU.

QCOW	File extension: QCOW
	File type:	QEMU files

What is a QCOW file?

QCOW files mostly belong to QEMU by Fabrice Bellard. QCOW is an obsolete file format which has been superseded by QCOW2. This file belongs to QEMU; an open-source VM (Virtualization Machine) and emulator software solution and stores image files. Virtualization has made great strides in becoming a much coveted solution for running multiple environments on one physical machine. The benefits are multi-layered ranging from a more flexible deployment and maintenance system to reduced costs in both energy and ongoing expenses.

How to open a QCOW file

You need a suitable software like QEMU to open a QCOW file. You need a suitable software like QEMU from Fabrice Bellard to open a QCOW file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your QCOW file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a QCOW file directly in the browser:. Just drag the file onto this browser window and drop it.

Online QCOW File Viewer

Choose your .qcow file to view

or drag and drop it here

Online File Viewer

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How to extract texts from QCOW files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

If you want to extract texts from QCOW file or capture a screenshot, you can use our free Online QCOW File Viewer:

To do so, click the "Choose your .qcow file to view" button above.
Your QCOW file will then be displayed in the browser.
Now click on "Save as..." at the top of the page.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

.QCOW File Not Opening? How to Fix It:

QCOW files can originate from different programs and aren't universally openable.

Identify the Source: If the file came from a virtualization workflow or a system administrator, it is likely a QEMU Copy On Write Archive disk image.
Check the Header: Open the file in a hex viewer to inspect its first bytes:
- QFI indicates a standard QEMU virtual drive.
- PK suggests a renamed zip archive.
Use the Original Software: You usually need the original program to open it; try QEMU (by Fabrice Bellard), VirtualBox, or VMware. If unsure, ask the sender.
Use this Webpage: Drag and drop your .QCOW file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for QCOW File Extension

File classification:

How to solve problems with QCOW files

Associate the QCOW file extension with the correct application.
Update your software that should actually open QEMU files. Because only the current version supports the latest QCOW file format. Search, therefore, e.g. on the Fabrice Bellard manufacturer website after an available QEMU update.
To make sure that your QCOW file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .QCOW file online - secure, fast, and no downloads needed.