Convert MHD to JPG Online
Convert MHD (MetaImage) medical volume files to viewable JPG images. MHD is a header-plus-data format used by ITK, VTK, and Elastix for storing 3D medical volumes from CT, MRI, and micro-CT scanners. Our converter reads the MHD header, locates the associated .raw data file, and produces standard JPG slice images you can view on any device.
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DICOM (.dcm), NIfTI (.nii, .nii.gz), NRRD (.nrrd), MHA (.mha)
Max file size: 200 MB • Processed locally
Why Convert MHD to JPG?
MHD (MetaImage Header) files are a two-part format consisting of a text header (.mhd) that describes the volume dimensions, spacing, and data type, paired with a separate binary data file (.raw or .zraw). This format is the native output of many medical image processing libraries including ITK (Insight Toolkit), VTK (Visualization Toolkit), and the Elastix registration framework. While efficient for computational processing, MHD files require specialized software to view.
Converting MHD to JPG bridges the gap between advanced medical image computing and everyday accessibility. Researchers using ITK-based processing pipelines, Elastix registration workflows, or VTK-based visualization systems can quickly generate viewable images from their processing results — without configuring a full visualization environment — for sharing with collaborators, supervisors, or clinical partners.
Micro-CT and preclinical imaging facilities often produce MHD output from their scanning and reconstruction software. Converting these files to JPG enables researchers to quickly review scan results, verify sample positioning, and share preliminary findings with lab colleagues who may not have access to 3D volume rendering software.
How to Convert MHD to JPG
- Upload your .mhd file and its associated .raw data file together.
- The converter reads the MHD header and extracts image slices from the binary data.
- Download JPG images of individual slices — viewable on any device.
Key Features
- Convert MHD/MetaImage header+data files to JPG images
- Automatic pairing of .mhd header with .raw data file
- Support for compressed (.zraw) and uncompressed (.raw) data
- Compatible with ITK, VTK, Elastix, and SimpleITK output
- Ideal for micro-CT, preclinical, and research imaging data
- Free online tool — no ITK installation required
- Secure processing with encrypted uploads and auto-deletion
Frequently Asked Questions
What is the difference between MHD and MHA files?
MHD files store the header and data separately: a .mhd text header file plus a .raw binary data file. MHA files combine both into a single file. Both are MetaImage formats used by ITK/VTK. If your data is a single .mha file, use our MHA to JPG converter instead.
Do I need to upload both the .mhd and .raw files?
Yes. The .mhd file contains only the header (volume dimensions, data type, spacing). The actual image data is in the associated .raw file. Upload both files together for successful conversion. The converter automatically pairs them based on the ElementDataFile field in the MHD header.
Which software produces MHD files?
MHD/MetaImage is the native format of ITK (Insight Toolkit), VTK (Visualization Toolkit), Elastix, SimpleITK, and many ITK-based applications including 3D Slicer (optional export), ITK-SNAP, and various micro-CT reconstruction software packages.
Can I convert compressed MHD files (.zraw)?
Yes. Our converter supports both uncompressed (.raw) and zlib-compressed (.zraw) data files. The compression type is automatically detected from the CompressedData field in the MHD header.