How should I use the NII manifest endpoint?

Fetch manifest JSON to pin fixture names, sizes, hashes, and MIME expectations in automated tests.

Why does this format have a category-specific hub?

A category-specific hub keeps assumptions aligned with practical workflows and related format alternatives.

NII Format Hub

NIfTI (.nii) files are common in neuroimaging and scientific imaging workflows, storing volumetric image data with spatial metadata in a compact binary container. Use sample .nii files to validate volume readers, header parsing, coordinate transforms, and cross-tool compatibility in analysis and medical-imaging pipelines.

Coverage Snapshot

CategoryImage

Files3

Min Size4.5 KB

Max Size66.4 KB

Downloads (30d)11

Primary MIME Signals

application/octet-stream

Open Sample Page Open Manifest JSON

Related Formats in Image

PNG (11) JPEG (8) SVG (7) AVIF (6) TIFF (6) BMP (4) GIF (4) HEIC (4)

Format Strategy Links

Open NII FAQ

Implementation Notes

Use the manifest endpoint for deterministic fixture selection in CI, then validate MIME/type detection against actual parser output.

If this format appears in multiple categories, prefer category-specific hub pages to keep test assumptions aligned with real usage.