DICOM File Extension

Programs that support DICOM files

• Windows ⁴
• Mac OS ²
• Linux ²

Windows

• GIMP
• FastPictureViewer Pro
• ImageJ
• Analyze

Mac OS

• GIMP
• ImageJ

Linux

• GIMP
• ImageJ

How to open a DICOM file?

If you are having trouble opening a DICOM file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

The most popular programs for working with DICOM files are GIMP, FastPictureViewer Pro and ImageJ. To install the current version of ImageJ, go directly to the official Wayne Rasband website. The universal package for all operating systems is available there.

After setup, the operating system should recognize DICOM files and link them with ImageJ.

Setting ImageJ as default DICOM viewer

Changing the default program in Windows

1. Right-click on your DICOM file and choose the "Open With" option. Then click "Choose another app" to continue the process;
2. Choose ImageJ from the available applications listed in the pop-up window to set it as the default application to open your DICOM file;
3. Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.

Change the default app for a file type in Mac

1. Initiate a right click or use Control + left click on the desired DICOM file to open a menu where you can select various actions;
2. Select "Open in application" and click "Other";
3. Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
4. Choose "All Programs" within this menu and locate ImageJ. Check the box next to "Always open in app" to set it as the default program.

Convert to and from DICOM

For difficult DICOM files, try converting them to formats like JPG, JPEG or similar formats to improve usability.

Please note that after converting a DICOM file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.

Convert DICOM to other file formats

• DICOM to JPG
• DICOM to JPEG

Tips and tricks to solve problems with DICOM files

DICOM files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.

How to edit a DICOM file?

To edit DICOM files, you need to install specialized software that allows you not only to open but also to modify raster image files. Online DICOM editors usually provide fewer features than software created specifically for DICOM Image Format.

Best DICOM editors in 2026

Based on your described criteria, here is a list of available DICOM editors.