NUNJ File Extension

Nunjucks template

File Type nunj
Popularity
4.4 (40 votes)
Application Visual Studio Code
Category Developer Files

What is a NUNJ file?

The NUNJ extension is related to Nunjucks template and is classified in the Developer Files category, which contains 1166 files.

NUNJ files are compatible with various operating systems, including Mac OS, Windows and Linux. You can open a NUNJ file using one of 2 programs, for example Visual Studio Code and Nunjucks.

Windows

Mac OS

Linux

How to open a NUNJ file?

The most common reason why a NUNJ file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.

Visual Studio Code and Nunjucks are among the most widely used programs for handling NUNJ files. If you wish to install the latest release of Visual Studio Code, visit the official Microsoft portal and download the edition that works on any operating system.

Following installation, NUNJ files should be automatically opened with Visual Studio Code.

Set Visual Studio Code as the default NUNJ application

Change the default app that opens a file on Mac

Right-click or use Control + Left-click on the desired NUNJ file to open a menu where you can choose from multiple actions;
Choose "Open in Application" and click "Other";
Look at the bottom of the window, where you will see the "Enable" menu. "Recommended Programs" will be selected as the default option;
Within this menu select "All Programs" and navigate to Visual Studio Code. Check the box next to "Always open in app" to make sure it’s the default option.

Change default programs in Windows

Start the process by right-clicking on your NUNJ file and selecting "Open With". From there, click "Choose another app" to continue;
From the options listed in the pop-up window, specifically choose Visual Studio Code as the application to handle your NUNJ file;
Be sure to check the "Always use this app" checkbox and click "OK" to save your preference.

Troubleshooting guide for NUNJ file complications

When issues arise with NUNJ files, they can generally be fixed with small software tweaks. Use the troubleshooting tips below to help resolve them.

What are the possible solutions to recover a corrupt NUNJ file?

Start a recovery program, open the damaged NUNJ file and then select the "Repair" menu item to start the repair procedure. Wait for the recovery process to finish, allowing automatic repair of damaged developer files.

How can I confirm if my NUNJ file has been damaged?

The signs of corrupted NUNJ developer files can manifest as:

The file shows slow performance when edited in Visual Studio Code;
The file stops responding or freezes in Visual Studio Code or other programs;
The file does not respond or shows errors when opening it;
Unexplained NUNJ file size inflation;
The file operation is accompanied by the display of error messages;

What are the possible causes of Visual Studio Code crashing?

Lack of regular software updates can cause Visual Studio Code to crash. Make sure you have installed the latest updates for Microsoft products.

Restarting your computer is a crucial troubleshooting measure that can alleviate numerous common problems. Therefore, it is advisable to restart your computer before modifying any settings related to the software.

How to edit a NUNJ file?

To modify NUNJ files, it is necessary to install dedicated software that lets you open and edit developer files. Online NUNJ editors generally offer fewer tools compared to programs designed for Nunjucks template.

Best NUNJ Editor Software in 2026

Taking into account the provided details, we have prepared a list of NUNJ editors that match your needs.

NUNJ Editor Software	Developer	Platforms	Overall Rating
Visual Studio Code	Microsoft	Windows, Mac OS, Linux	4.7 out of 5 (38 reviews)
Nunjucks	-	Windows, Mac OS, Linux	4.1 out of 5 (42 reviews)

‹ NUNJS | NUMBERS ›