KT File Extension
Kotlin Source Code File
- File Type kt
- Developer JetBrains
- Popularity
- Application IntelliJ IDEA
- Category Developer Files
- Format Text
What is a KT file?
Files with the KT extension are specifically tied to Kotlin Source Code File, a Developer Files type, and there are 1166 files in this category.
The Kotlin Source Code File (KT) was created by JetBrains, a company that developed file format and produced 2 programs for their use.
KT files are supported by Linux, Windows and Mac OS. If you need to open a KT file, you can use one of 3 programs, such as Android Studio, IntelliJ IDEA and NetBeans.
Programs that support KT files
How to open a KT file?
If you’re having difficulty opening a KT file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.
Android Studio, IntelliJ IDEA and NetBeans stand out as the preferred programs to manage KT files effectively. To install the latest version of IntelliJ IDEA on your computer, visit the JetBrains website where you can download the version available for all operating systems.
After installation, your operating system should automatically open KT files with IntelliJ IDEA.
Set IntelliJ IDEA as the default KT handler
Choose an app to open a file on Mac
- Right click or use Control + left click on the desired KT file to launch the file options menu;
- Choose "Open in Application" and click "Other";
- Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
- In this menu, select "All Programs", then find IntelliJ IDEA and check the box next to "Always open in the application."
Set default programs for Windows
- Start by right-clicking on your KT file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
- In the pop-up window, find and select the IntelliJ IDEA application from the available options;
- Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening KT files.
Effective solutions for KT file problems
There are some common issues with KT files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.
What are the methods to detect if my KT file has been corrupted?
KT developer files that have become corrupted may display one or more of the following symptoms:
- An unexplained increase in the size of the KT file;
- Trying to work with the archive in IntelliJ IDEA or other programs causes instability or program crashes;
- The file does not open correctly or displays error messages;
- While working with the file, error alerts are encountered;
- The file exhibits poor performance during editing operations in Android Studio;
Why does IntelliJ IDEA crash?
Insufficient software updates can contribute to IntelliJ IDEA crash. To avoid this, make sure that you have installed the latest updates for JetBrains products.
Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.
How to repair a corrupted KT file?
Open the damaged KT file in a recovery program and select the "Repair" menu item to start the repair operation. Please wait patiently for the recovery process to finish as it will automatically repair the damaged developer files.
How to edit a KT file?
To make changes to KT files, you need specialized software that allows both opening and editing the developer files. Online KT editors offer fewer capabilities than applications optimized for Kotlin Source Code File.
Best KT editors 2026
Based on these criteria, we have prepared a list of available KT editors.
| KT Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| IntelliJ IDEA | JetBrains | Windows, Mac OS, Linux | 4.6 out of 5 (39 reviews) |
| Android Studio | Windows, Mac OS, Linux | 4.5 out of 5 (38 reviews) | |
| NetBeans | Oracle | Windows, Mac OS, Linux | 4.4 out of 5 (36 reviews) |