JSON Sample Files for Testing
JavaScript Object Notation (.json) files represent structured data as nested objects and arrays in a language-agnostic, human-readable format. Integral to REST APIs, configuration files, and data interchange, JSON’s ubiquity demands robust tooling. Use sample .json files to test schema validation, serialization/deserialization loops, large-payload streaming, and front-end data binding, covering nested structures, mixed types, and special characters.
JSON Sample Files — Download
Starter file
DownloadNested API Payload JSON
Download FixtureArray-of-Records JSON
Download FixtureDeeply Nested JSON
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| 1.2 KB | application/json |
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| 302 B | application/json |
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| 308 B | application/json |
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| 97 B | application/json |
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| 158 B | application/json |
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| 240 B | application/json |
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| 423 B | application/json |
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| 100.0 MB | application/json |
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| 100.0 MB | application/json |
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| 10.0 MB | application/json |
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| 1.0 MB | application/json |
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| 200.1 KB | application/json |
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| 250.0 MB | application/json |
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| 25.0 MB | application/json |
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| 2.0 MB | application/json |
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| 500.0 KB | application/json |
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| 50.1 KB | application/json |
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| 50.0 MB | application/json |
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| 5.0 MB | application/json |
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| 457 B | application/json |
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| 193 B | application/json |
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| 204 B | application/json |
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JSON Testing Workflows
JSON Format Comparisons
CSV vs JSON
Compare flat vs nested payloadsJSON vs JSONL
Compare document vs event streamJSON File FAQ
Checksum Verification
Use checksums to confirm file integrity after download.
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 json_array_records_sample.json
curl -L -o json_array_records_sample.json \
https://samplefile.com/samples/download/document/json/json_array_records_sample.json/
# Or fetch a random JSON file
curl -s "https://samplefile.com/samples/api/random?format=json" | jq -r '.download_url'
# Download json_array_records_sample.json
wget -O json_array_records_sample.json \
https://samplefile.com/samples/download/document/json/json_array_records_sample.json/
import requests
# Download a specific file
url = "https://samplefile.com/samples/download/document/json/json_array_records_sample.json/"
resp = requests.get(url)
with open("json_array_records_sample.json", "wb") as f:
f.write(resp.content)
# Or fetch a random JSON file via API
meta = requests.get("https://samplefile.com/samples/api/random?format=json").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/document/json/json_array_records_sample.json/";
https.get(url, (res) => {
res.pipe(fs.createWriteStream("json_array_records_sample.json"));
});
// Or fetch a random JSON via the API
const meta = await fetch("https://samplefile.com/samples/api/random?format=json").then(r => r.json());
const file = await fetch(meta.download_url);
// use file.arrayBuffer(), file.body, etc.
# Random JSON file (JSON response)
GET https://samplefile.com/samples/api/random?format=json
# All JSON files
GET https://samplefile.com/samples/api/files?format=json
# Manifest with SHA256 checksums
GET https://samplefile.com/samples/document/json/manifest.json
# Response includes: name, size_bytes, mime_type, sha256, download_url
Validation Methodology
- Test parser behavior on varied sizes and edge-case encodings.
- Validate text extraction and metadata integrity.
- Confirm conversion and round-trip fidelity where applicable.
Use the curated JSON matrix to choose the right clean, edge-case, and broken fixtures for this format.
Open Matrix