Free DICOM viewer for patients — online, no download
Free Online DICOM Viewer — No Download, No Upload
Open any DICOM folder in your browser. MRI, CT, X-ray, ultrasound — all supported. Files stay on your device.
Drop your scan folder here
DICOM, DICOMDIR, or any folder from a hospital CD or USB
- Free forever
- No upload, no install
- Works on any computer
What is DICOM?
DICOM (Digital Imaging and Communications in Medicine) is the file format every hospital, clinic, and imaging centre uses to store medical scans. When you receive a CD, USB stick, or download from your hospital, the files inside are almost always DICOM — even if the filenames don't say so.
Unlike a regular photo, a DICOM file isn't just a picture. It contains the actual scan slice plus technical information about the scan: which body part, which scanner, slice thickness, patient identifiers, and dozens more details. Standard photo apps like Preview on Mac or Photos on Windows can't read DICOM files — you need a viewer that understands the format.
That's what OpenMyScan does. Drop your DICOM folder above and you'll see your scan in seconds.
How OpenMyScan works
The whole process takes about 10 seconds. No account, no installation, no hidden steps.
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Step 1 — Drop your scan folder
Drag the folder your hospital gave you into the dropzone above. Or click “Choose folder” to browse to it. Look for a folder named DICOM, IMAGES, or your patient ID — the files inside usually have no extension or end in .dcm.
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Step 2 — Your browser reads it locally
OpenMyScan parses the DICOM files directly on your computer. Nothing uploads. No server sees your scan. The whole study lives in your browser tab's memory.
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Step 3 — Scroll, zoom, adjust
Use your trackpad or mouse to scroll through slices. Zoom in on details. Adjust brightness and contrast from the sidebar. Switch between sequences if your study has multiple.
Privacy by design
Most online DICOM viewers upload your scan to a server before showing it to you. OpenMyScan doesn't. Your files are read directly by your browser, in memory, on your device. When you close the tab, the data is gone.
This matters because medical scans are sensitive. They contain your name, your medical record number, and details about your health. Uploading them to a stranger's server — even briefly — is a privacy decision worth thinking about.
We built OpenMyScan around the assumption that you shouldn't have to. The technology to read DICOM files in the browser has existed for years; we just made it patient-friendly.
Questions people actually ask
What modalities does OpenMyScan support?
MRI, CT, X-ray, ultrasound, mammography, PET, and other DICOM-compliant scans. If your hospital exported it as DICOM, OpenMyScan can read it.
Does it work on Mac, Windows, and Linux?
Yes. OpenMyScan runs in any modern browser — Chrome, Safari, Firefox, Edge — on any operating system. There's nothing to install.
Can I view my scan on my phone?
Phone screens are too small to display medical scans usefully. Use a laptop, desktop, or tablet in landscape mode. iPad works well.
How big a scan can I open?
We've tested with studies up to several thousand slices. Larger studies take longer to load but should work on any modern computer with a few gigabytes of free RAM.
Is OpenMyScan a diagnostic tool?
No. OpenMyScan is a viewer for images you already own. It is not FDA- or CE-cleared, and it is not a substitute for medical advice. Always discuss your scan results with your doctor.
What happens to my files when I close the browser tab?
Nothing — the data was only ever in your browser's memory. Closing the tab releases it. There's no cache, no upload, no record.
Is OpenMyScan really free?
Yes. The viewer is free forever, no account needed. We're building a Pro version (launching soon) that adds features like saving slices as images and sharing scans — but the core viewer stays free.