Free Online CT Scan Viewer with AI Analysis
Upload your CT scan DICOM files and view them instantly in your browser. No software to install, no account required. Navigate through axial, coronal, and sagittal slices with professional windowing controls — all data stays on your device.
Upload Your CT ScanHow It Works
Upload CT Files
Drop your CT DICOM files or ZIP archive. Our parser automatically organizes axial slices and reconstructions by series.
Navigate Through Slices
Scroll through hundreds of axial slices. Switch between bone and soft tissue windows. Zoom, pan, and measure structures.
Get AI Analysis
4 AI models independently assess your CT images for fractures, degenerative changes, and structural abnormalities. Claude Opus provides a synthesized report.
The Last CT Viewer You Will Need
100% Browser-Based
Your CT files are parsed and rendered entirely in your browser using JavaScript and the Canvas API. Nothing is uploaded to any server. Files are stored temporarily in IndexedDB and cleared when you want.
No Installation Required
No software downloads, no Java plugins, no desktop applications. Open your browser, drop your files, and start viewing. Works on Chrome, Firefox, Safari, and Edge.
Multi-Slice Navigation
Efficiently browse through hundreds of CT slices with keyboard shortcuts or the slider. Thumbnail strip shows your position in the series.
CT Windowing Presets
Optimized presets for bone (WC 300, WW 2000), soft tissue (WC 40, WW 400), and custom windowing. See fractures, soft tissue detail, and bone density in the same scan.
Series Organization
CT scans often contain multiple reconstructions. Our viewer automatically groups axial, coronal, and sagittal series in a sidebar for easy switching.
Downloadable PDF Report
After AI analysis, download a structured PDF report with findings, severity grading, and clinical recommendations to share with your healthcare provider.
Supported CT Formats
File Types
- DICOM (.dcm) — standard CT slice files
- ZIP archives — containing CT series
- Axial, coronal, and sagittal reconstructions
Technical Details
- Thin-slice and standard reconstructions
- 12-bit and 16-bit Hounsfield unit data
- All major CT manufacturer formats (Siemens, GE, Philips, Canon, Toshiba)
Frequently Asked Questions
Is this CT viewer really free?
Yes, completely free. View unlimited CT scans. AI analysis requires credits.
Is my CT data private?
Your files never leave your browser. All parsing and rendering happens client-side using JavaScript. We cannot see, access, or store your medical images. When you close the tab or clear data, your files are gone.
How many slices can it handle?
Our viewer handles CT series with hundreds of slices. Files are loaded into IndexedDB and rendered on demand. For very large datasets (1000+ slices), we recommend using a device with at least 4GB of RAM.
Does it display Hounsfield units?
The viewer uses Hounsfield unit data for windowing calculations. Bone windows optimize for cortical detail, while soft tissue windows reveal organ and muscle contrast. The actual HU values are used internally for accurate rendering.
Can I view contrast-enhanced CT?
Yes. Both non-contrast and contrast-enhanced CT scans are supported. The viewer renders whatever DICOM pixel data is provided. Windowing controls help optimize visualization for different contrast phases.