Image format
Fichiers d'echantillon NII
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.
3 fichiers
All to 50KB
SHA256 verified
Manifeste included
Quick facts
Files first
NII Sample Files — Download
Starter file
TelechargerAnatomical NIfTI Volume
Telecharger le fixtureFunctional NIfTI Volume
Telecharger le fixture| Nom du fichier | Taille | MIME | Telecharger |
|---|---|---|---|
| 66.4 KB | application/octet-stream |
Telecharger
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| 42.2 KB | application/octet-stream |
Telecharger
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| 4.5 KB | application/octet-stream |
Telecharger
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Use cases
NII Testing Workflows
Volume Preview and Structure Review
Ouvrir le format NIIFunctional and Resampled Volume Validation
Ouvrir le format NIICompare and decide
NII Format Comparisons
FAQ and reference
NII File FAQ
Verification du checksum
Utilisez les checksums pour confirmer l'integrite du fichier apres telechargement.
shasum -a 256 your_file_name_here
# Compare output with SHA256 values listed above.Where is the machine-readable manifest?
Use the manifest when you need stable names, SHA256 values, and URLs for automation.
Use in code — curl, Python, Node, wget
Copy any snippet directly into scripts, test suites, or CI pipelines. All URLs are stable and publicly accessible with no auth required.
# Download nii_anatomical_volume_sample.nii
curl -L -o nii_anatomical_volume_sample.nii \
https://samplefile.com/samples/download/image/nii/nii_anatomical_volume_sample.nii/
# Or fetch a random NII file
curl -s "https://samplefile.com/samples/api/random?format=nii" | jq -r '.download_url'# Download nii_anatomical_volume_sample.nii
wget -O nii_anatomical_volume_sample.nii \
https://samplefile.com/samples/download/image/nii/nii_anatomical_volume_sample.nii/import requests
# Download a specific file
url = "https://samplefile.com/samples/download/image/nii/nii_anatomical_volume_sample.nii/"
resp = requests.get(url)
with open("nii_anatomical_volume_sample.nii", "wb") as f:
f.write(resp.content)
# Or fetch a random NII file via API
meta = requests.get("https://samplefile.com/samples/api/random?format=nii").json()
resp = requests.get(meta["download_url"])
with open(meta["name"], "wb") as f:
f.write(resp.content)// Download a specific file
const fs = require("fs");
const https = require("https");
const url = "https://samplefile.com/samples/download/image/nii/nii_anatomical_volume_sample.nii/";
https.get(url, (res) => {
res.pipe(fs.createWriteStream("nii_anatomical_volume_sample.nii"));
});
// Or fetch a random NII via the API
const meta = await fetch("https://samplefile.com/samples/api/random?format=nii").then(r => r.json());
const file = await fetch(meta.download_url);
// use file.arrayBuffer(), file.body, etc.# Random NII file (JSON response)
GET https://samplefile.com/samples/api/random?format=nii
# All NII files
GET https://samplefile.com/samples/api/files?format=nii
# Manifest with SHA256 checksums
GET https://samplefile.com/samples/image/nii/manifest.json
# Response includes: name, size_bytes, mime_type, sha256, download_urlMethodologie de validation
- Validate MIME sniffing against extension and file signatures.
- Test transparency, color profile, and resize pipelines.
- Benchmark decode speed and memory use for larger dimensions.
Matrice de fixtures
Utilisez la matrice NII pour choisir les bons fixtures propres, limites et casses pour ce format.
Ouvrir la matrice
Packs de workflow