Open a DICOMDIR online, with nothing to install
Got a CT scan CD or DVD and can't open it? Drag the folder containing the DICOMDIR file straight into your browser and view the study in seconds. Nothing is installed, and your files never leave your computer.
Open my DICOMDIR now → Free · No sign-up · Works in Chrome, Edge and FirefoxHow to open a DICOMDIR
Three steps, right in your browser — no software, no waiting.
Find the folder
On the clinic's CD, DVD or USB drive, locate the folder that holds the DICOMDIR file and the study images.
Drag it into InDICOM
Open the viewer and drag the whole folder (or a .zip / .rar file) onto the drop area.
Explore the study
View the axial, coronal and sagittal slices, the 3D and cross-sections. Export to JPG or PDF if you need to.
What is a DICOMDIR file?
DICOMDIR is the index file a clinic writes onto the CT scan CD or DVD. It isn't an image itself — it's a table of contents: it points to every DICOM image in the study and tells the viewer how to assemble them in the right order. That's why opening a single loose image looks incomplete — the DICOMDIR is what pulls the whole scan together.
The catch is that most computers have no program that reads this format, and the software clinics suggest is often heavy, outdated or Windows-only. InDICOM solves this by running entirely in your browser: you install nothing, and because all processing happens on your own machine, the patient's data is never sent to any server.
Frequently asked questions
Common questions from people who need to open a scan.
Do I need to install any software?
No. InDICOM opens the DICOMDIR directly in your browser. Just drag the CD/DVD folder or the file onto the page.
Are my files uploaded to a server?
No. All processing runs locally, on your computer. The scan files never leave your machine — full privacy for the patient's data.
Does it work if the study is a .zip or .rar?
Yes. You can drag the unzipped folder, a .zip or a .rar. InDICOM finds the DICOMDIR and loads the study automatically.
Is it really free?
Yes, it's free with no sign-up. You can also export slices as JPG or generate a PDF report.