QTI File Extension
QuickTime Image Format
- File Type qti
- Developer Apple
- Popularity
- Application QuickTime
- Category Graphics Files
- Format Binary
What is a QTI file?
Files with the QTI extension are specifically tied to QuickTime Image Format, a Graphics Files type, and there are 556 files in this category.
The QuickTime Image Format (QTI), created by Apple, is one of file format they developed, and they also built 72 programs to support them.
QTI files are compatible with various operating systems, including Mac OS, Windows and Linux. When working with QTI files, you can rely on 2 programs, including QuickTime and XnView.
Programs that support QTI files
How to open a QTI file?
If you can’t open a QTI file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
QuickTime and XnView are among the most widely used programs for handling QTI files. To install the most up-to-date edition of QuickTime, visit the official Apple website. You can download the build that works across all operating systems.
After installing, your OS should instantly open QTI files with QuickTime.
Setting QuickTime as default QTI viewer
Change the default app for a file type in Mac
- Initiate a right click or use Control + left click on the desired QTI file to open a menu where you can select various actions;
- Choose "Open in Application" and click "Other";
- Look towards the bottom of the window, where you will find the "Enable" menu. "Recommended programs" will be the default selection;
- Choose "All Programs" in this menu and search for QuickTime. Check the box next to "Always open in app" to set it as the default option.
Change default programs in Windows
- Take the first step by right-clicking on your QTI file. Next, select "Open With" and then choose "Choose another app" from the available options;
- Choose QuickTime from the available applications listed in the pop-up window to set it as the default application to open your QTI file;
- Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.
Tips and tricks to solve problems with QTI files
Problematic QTI files can usually be resolved by making small changes in your software. See the tips below to help fix common issues.
Are there any techniques or tools available to repair a damaged QTI file?
In a data recovery program, open the damaged QTI file and select the "Repair" menu option. Wait for the recovery process to finish as it will automatically restore the damaged graphics files.
How do I know if my QTI file has been damaged?
The signs of corrupted QTI graphics files can manifest as:
- Error alerts occur when actions are performed on the file;
- The file shows slow performance when edited in QuickTime;
- The file encounters problems during the opening process or shows error indications;
- An unexplained increase in the size of the QTI file;
- The file causes QuickTime or other software to hang or crash during various operations;
What factors contribute to QuickTime crash?
Lack of software updates is a possible reason behind QuickTime crash. Keep your Apple products up to date by installing the latest updates.
Restarting your computer is an essential troubleshooting step that can resolve many common problems. It is recommended to restart your computer before making any changes to the software settings.
How to edit a QTI file?
To modify QTI files, it is necessary to install dedicated software that lets you open and edit graphics files. Online QTI editors generally offer fewer tools compared to programs designed for QuickTime Image Format.
Best QTI editors 2026
Based on the specified criteria, here is a list of QTI editors that may fit your requirements.
| QTI Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| QuickTime | Apple | Mac OS, Windows | 4.9 out of 5 (41 review) |