QTZ File Extension

What is QTZ file?

Full format name of files that use QTZ extension is Quartz Composer Format. Quartz Composer Format specification was created by Apple. QTZ files are supported by software applications available for devices running Mac OS. QTZ file format, along with 546 other file formats, belongs to the Video Files category. Apple Quartz supports QTZ files and is the most frequently used program to handle such files, yet 2 other tools may also be used.

Programs which support QTZ file extension

Programs that can handle QTZ files are as follows. Files with QTZ extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

How to open file with QTZ extension?

There can be multiple causes why you have problems with opening QTZ files on given system. Fortunately, most common problems with QTZ files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with QTZ files.

Step 1. Download and install Apple Quartz

Problems with opening and working with QTZ files are most probably having to do with no proper software compatible with QTZ files being present on your machine. This issue can be addressed by downloading and installing Apple Quartz or different compatible program, such as QuickTime Player, Mac OS X. The full list of programs grouped by operating systems can be found above. The safest method of downloading Apple Quartz installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Check the version of Apple Quartz and update if needed

If the problems with opening QTZ files still occur even after installing Apple Quartz, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Apple Quartz is available. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. The reason that Apple Quartz cannot handle files with QTZ may be that the software is outdated. The latest version of Apple Quartz should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open QTZ files to Apple Quartz

After installing Apple Quartz (the most recent version) make sure that it is set as the default application to open QTZ files. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

The procedure to change the default program in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the QTZ file
• Next, select the Choose another app option and then using More apps open the list of available applications
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Apple Quartz is installed. Now all that is left is to confirm your choice by selecting Always use this app to open QTZ files and clicking OK.

The procedure to change the default program in Mac OS

• Right-click the QTZ file and select Information
• Find the Open with option – click the title if its hidden
• From the list choose the appropriate program and confirm by clicking Change for all....
• A message window should appear informing that This change will be applied to all files with QTZ extension. By clicking Continue you confirm your selection.

Step 4. Verify that the QTZ is not faulty

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper QTZ file. Being unable to access the file can be related to various issues.

1. Check the QTZ file for viruses or malware

If the file is infected, the malware that resides in the QTZ file hinders attempts to open it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the scanner detected that the QTZ file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Ensure the file with QTZ extension is complete and error-free

If the QTZ file was sent to you by someone else, ask this person to resend the file to you. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. If the QTZ file has been downloaded from the internet only partially, try to redownload it.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the Quartz Composer Format file again.

4. Check whether your system can handle Apple Quartz

If the system is under havy load, it may not be able to handle the program that you use to open files with QTZ extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Quartz Composer Format files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle QTZ files.

Do you want to help?

If you have additional information about the QTZ file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on QTZ file.