100% Secure & Private
HDF4 Converter
HDF4 files usually open only in GIS software. reaConverter reads them directly and converts whole folders into formats colleagues and clients can use.
How to Convert .hdf4 Files in Bulk
1. Install reaConverter
2. Select HDF4 Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless HDF4 file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.
GIS Toolkit
Do more with your GIS data
Need HDF4 data as something anyone can open? reaConverter renders imagery and elevation grids into standard images and documents without QGIS or ArcGIS, and works through whole folders in one pass.
- Render imagery, elevation grids and scanned charts to TIFF, PNG, JPG or PDF
- Resize, crop and set DPI on the output in the same run
- Bring tiles, scenes and grids from many sources into one consistent format
- Convert incoming survey and field data automatically with Watch Folders
- Script GIS conversions from the command line for pipelines and scheduled jobs
- Keep cadastral, utility and client data on your PC: nothing is uploaded
User reviews
From those who tried it
Average User Rating:Last updated on July 28, 2026
Questions & Answers
HDF4 files: Frequently Asked Questions
What are HDF4 files?
HDF4 is a binary format in which a file holds a catalog of tagged objects, and each tagged object points to a block of data. The format defines eight basic kinds of objects: 8-bit raster images, 24-bit raster images, general raster images with several components per pixel, color palettes, scientific data sets, tables of records, groups that collect other objects, and text annotations. Because the catalog is stored in the file itself, a program can discover its contents without outside documentation. Since HDF5 appeared with an entirely new structure, the two formats cannot be read by the same code, and files are usually converted between them with special tools. When an HDF4 file is turned into graphics, the first step is to see what it actually contains. Raster images are the easiest case, since they are already pictures and only need their palette applied. Scientific data sets hold arrays, which are converted into pictures by picking a layer, applying the scaling and missing-value information stored with the data, and assigning colors. Tables and groups are not images and are normally skipped. The result can be saved as PNG, JPEG, TIFF, or GeoTIFF. Supported by the NCAR Command Language and MATLAB.
Can reaConverter open HDF4 files?
reaConverter fully supports the HDF4 file format – open, edit, and export HDF4 files to any other popular file format with ease.
Do I need QGIS or ArcGIS to convert HDF4 files?
No. reaConverter reads HDF4 files on its own, so the conversion needs no GIS installation and no licence. It handles whole folders at once, which suits survey archives, tile sets and data deliveries that have to reach people working in other software.
How do I change HDF4 to another format?
reaConverter is a user-friendly tool for converting HDF4 files. Once installed on your computer, it allows you to convert all your .hdf4 files at once with just a few clicks. You can even convert hdf4 images directly from Windows Explorer using the right-click menu — fast and convenient.
Why choose offline conversion with reaConverter?
Keep your sensitive data 100% private with offline processing that never exposes files to cloud risks. Our software meets strict compliance standards (GDPR, HIPAA, CCPA) while handling confidential documents for legal, healthcare and financial sectors.
Can I convert HDF4 online?
If you only want to convert a few HDF4 files, you are welcome to try our free online HDF4 converter.
How can I turn HDF4 files on my computer to another format?
The best way to convert HDF4 files on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from HDF4.
How can I automate HDF4 files conversion?
reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.
Can I convert HDF4 files using scripts or the command-line interface?
reaConverter provides full access to all its features from the Windows command-line shell, including the command-line hdf4 converter.
What else can I do with reaConverter?
Convert CAD formatsSet file dateConvert RAW formatsConvert raster to vectorSet picture bit depth
What formats can I convert a HDF4 file to?
Discover More
Beyond HDF4 conversion
Convert .hdf4 files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
