Free Online DICOM Viewer
View your DICOM medical images directly in the browser. No software installation needed, completely free and private.
Drop your DICOM file here
or click to browse. Supports .dcm and .dicom files
Your files are processed locally in your browser. Nothing is uploaded to any server.
Why Use Our Online DICOM Viewer?
Our free DICOM viewer lets you open and view medical images without installing any software. Perfect for patients who want to review their imaging studies.
No Installation Required
Open DICOM files directly in your web browser. Works on Windows, Mac, Linux, and mobile devices without any downloads.
Complete Privacy
Your DICOM files are processed entirely in your browser using JavaScript. No data is ever sent to our servers.
Window/Level Adjustment
Adjust brightness and contrast with intuitive mouse controls. Fine-tune the window center and width for optimal viewing.
Multi-Frame Support
View multi-frame DICOM files including CT and MRI series. Scroll through slices with mouse wheel or slider controls.
DICOM Metadata Display
View essential DICOM metadata including modality, dimensions, window settings, and frame information.
Export to PNG
Export any frame from your DICOM file as a high-quality PNG image for sharing or documentation purposes.
Supported DICOM Formats & Modalities
Our viewer is built on the industry-standard Cornerstone.js library and supports a wide range of DICOM formats used in modern medical imaging.
CT (Computed Tomography)
View single-slice and multi-slice CT scans including chest CT, brain CT, abdominal CT, and cardiac CT angiography. Supports multi-frame scrolling through all slices.
MRI (Magnetic Resonance Imaging)
Open brain MRI, knee MRI, spine MRI, and shoulder MRI studies. Navigate through multiple sequences and slices with smooth frame control.
X-Ray (CR/DX)
Display standard radiographs including chest X-rays, dental X-rays, mammograms, and musculoskeletal X-rays with proper window/level settings.
Ultrasound (US)
View abdominal, thyroid, cardiac, and pelvic ultrasound DICOM files. Supports both still images and multi-frame cine loops.
Transfer Syntaxes
Supports Implicit VR Little Endian, Explicit VR Little Endian, JPEG Baseline, JPEG Lossless, JPEG 2000, and RLE Lossless compression formats.
File Compatibility
Accepts standard .dcm and .dicom file extensions. Automatically detects DICOM format by reading the DICM magic number, even without a file extension.
Online DICOM Viewer vs Desktop Software
See how our browser-based DICOM viewer compares to traditional desktop applications.
| Feature | CT Read Online Viewer | Desktop DICOM Software |
|---|---|---|
| Installation | None — works instantly in browser | Requires download and installation |
| Cost | 100% Free, no limits | Free to $300+ for professional licenses |
| Cross-Platform | Any device with a browser | Usually Windows-only, some Mac |
| Privacy | Files never leave your device | Files stay local |
| Updates | Always the latest version | Manual updates required |
| AI Analysis | One-click AI report available | Not available |
| Multi-Frame Support | Yes, with scroll navigation | Yes, full CINE playback |
| Advanced Tools | Window/Level, Export | Measurement, 3D Reconstruction, MPR |
How to View DICOM Files Online
Upload Your DICOM File
Drag and drop your .dcm file onto the viewer, or click to browse and select your file from your computer.
View and Navigate
Use mouse controls to adjust window/level, scroll through frames, and zoom in on areas of interest.
Export or Analyze
Export frames as PNG images, or use our AI analysis tool to get an instant interpretation of your medical image.