Inspect HDF5 scientific file
List datasets, dimensions and datatypes in HDF5, Loom, MuData and HDF5-based NetCDF4 files.
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Multiple files welcome · processed one at a time
Select a tool to see its supported formats and conversion limits. Large files may exceed your browser’s memory.
Before processing large files
On phones and tablets, start with files under 20 MiB and keep this tab in the foreground. Video, OCR and 3D operations can use several times the input size in memory. Desktop browsers generally have more room, but the 128 MiB job limit is not a guarantee that every file will fit. Smaller batches reduce memory pressure.
Supported input formats
- Hierarchical Data Format 5 (.h5)
- Hierarchical Data Format 5 (.hdf5)
- Hierarchical Data Format (HDF5 files only) (.hdf)
- NeXus scientific data (HDF5) (.nxs)
- Loom HDF5 matrix (.loom)
- MuData multimodal HDF5 data (.h5mu)
- HDF5-based NetCDF4 scientific data (.nc)
Output format
JavaScript Object Notation (.json)
Support applies to this conversion direction. Check the limits below for features that may change or be discarded.
Compare all supported formats and conversion limits →How to use Inspect HDF5 scientific file
- Add your supported file using the chooser or drop zone.
- Review the settings and conversion limits before processing.
- Select Convert files, then download the result.
What to expect
- HDF5 containers only; classic NetCDF3 is unsupported. Maximum 64 MiB, 24 levels and 1,000 entries. External and symbolic links are rejected. No dataset values are exported.
Engine: h5wasm. The engine may need a first-use download. Your file stays in this browser session.Check conversion engines and offline requirements.
About this conversion
Is inspect hdf5 scientific file free?
Yes. This tool runs on your device without an account or a conversion fee.
Are files uploaded during conversion?
File processing happens locally in your browser. Engines may download their code on first use; your input files are not sent to a conversion server. Read how file privacy works.
What if conversion fails?
Check that the file matches a supported input, review the engine’s limitations and try a smaller representative file. If the engine cannot load, check its engine assets and browser requirements. The app reports failures without switching to a remote converter.
Continue with your output
These tools accept this tool’s output format. Each step has its own settings and fidelity limits.
- Numeric data to HDF5
Create a single selected HDF5 dataset from a numeric matrix or an exported JSON envelope.
- JSON to CSV
Convert JSON locally with an explicit structured-data mapping.
- JSON to TSV
Convert JSON locally with an explicit structured-data mapping.
- JSON to YAML
Convert JSON locally with an explicit structured-data mapping.
- JSON to XML
Convert JSON locally with an explicit structured-data mapping.
- JSON to SQLite database
Create a portable, single-table SQLite database from JSON records.
More scientific tools
- HDF5 dataset to JSON
Select one numeric HDF5 dataset and export its values locally.
- HDF5 dataset to CSV
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- Inspect FASTA sequences
Summarize FASTA record lengths and sequence symbol counts locally.
- FASTA to CSV
Export FASTA identifiers, descriptions and sequence strings to CSV.
- FASTA to JSON
Export FASTA identifiers, descriptions and sequence strings to JSON.
- FASTA DNA reverse complement
Reverse complement IUPAC DNA sequences in a FASTA file while retaining their headers.