Open .hdr Files Online — Free ANALYZE Viewer
Open ANALYZE File Online — Free & Instant
No signup required. Works in your browser.
📁 Drag & drop your file here
or click to browse • Max 100MB
✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install
What Is a .hdr File?
A .hdr file is a medical format known as ANALYZE. Analyze 7.5 Header This format is created by Mayo Clinic and is widely used by radiologists and clinicians.
ANALYZE files contain structured medical data that requires compatible software to open. With OpenAnyFile, you can view and reconstruct .hdr files directly in your browser without installing any software.
How to Open .hdr Files Online
- Visit OpenAnyFile ANALYZE page
- Drag and drop your .hdr file onto the upload area, or click "Browse" to select it
- OpenAnyFile automatically detects the ANALYZE format using magic byte analysis
- View, analyze, and view and reconstruct your file contents in the browser
- Optionally convert to PNG, DICOM, TIFF, EXR or download
Software That Opens .hdr Files
.hdr files are primarily created by Mayo Clinic. In the medical space, you may encounter .hdr files from third-party tools, online converters, or export functions. Regardless of the source, OpenAnyFile handles them all.
Open .hdr on Different Platforms
- Windows: Use the original software or upload to OpenAnyFile for instant access
- macOS: Preview may not support .hdr — use OpenAnyFile as a universal viewer
- Linux: Open-source alternatives exist, or use OpenAnyFile in any browser
- Mobile (iPhone/Android): OpenAnyFile works on all mobile browsers
Common .hdr File Problems
Paired .img file required
Other common issues include: your OS not recognizing the file extension, the file appearing corrupted after download, or lacking the required software. OpenAnyFile bypasses all these issues with universal format detection.
Convert ANALYZE to Other Formats
ANALYZE files can be converted to 6 formats including PNG, DICOM, TIFF, EXR, NII, JPG.
Related Medical Formats
If you work with .hdr files, you may also encounter these medical formats:
- Analyze 7.5 (.hdr) — Open & convert .hdr files online
- Analyze Image (.img) — Open & convert .img files online
- ANNOT (.annot) — Open & convert .annot files online
- ARTEMIS (.art) — Open & convert .art files online
- BDF (.bdf) — Open & convert .bdf files online
- BEDPOSTX (.bedpostX) — Open & convert .bedpostX files online
- BIDS (.json) — Open & convert .json files online
- BIF (.bif) — Open & convert .bif files online
- BRAINVISA (.arg) — Open & convert .arg files online
- BrainVoyager VMR (.vmr) — Open & convert .vmr files online
Popular ANALYZE Conversions
Frequently Asked Questions
What is a .hdr file?
A .hdr file is a medical format called ANALYZE. Analyze 7.5 Header
How do I open a .hdr file without installing software?
Upload your .hdr file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .hdr files?
.hdr files are typically created by Mayo Clinic.
Can I convert .hdr to another format?
Yes. OpenAnyFile converts .hdr to PNG, DICOM, TIFF, EXR, NII.
Is it safe to open .hdr files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .hdr on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.