Nested JSON with every value type

A small configuration-style JSON document that uses every JSON value type, deep nesting, escaped characters, Unicode escapes, an empty object and an empty array.

sample-nested-config.json

829 B829 bytes

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Type: application/json
SHA-256: ec953b49ebd4b1f8be6e9710dbc938cb0e27d6d158e0f9d5fce4951fd7d63916
Direct URL: https://sampletestfiles.com/downloads/samples/sample-nested-config.json

Why test with this file

A compact conformance check for JSON parsers and schema validators.

Root type	Object
Maximum depth	6
Value types used	string, number (integer, negative, decimal, exponent), boolean, null, array, object
Encoding	UTF-8 without BOM

What to check

After your application has processed sample-nested-config.json, confirm that:

null, false, 0 and the empty string remain four different values after parsing.
The number 1.5e21 and the negative integer survive a round trip unchanged.
Escaped characters and Unicode escapes decode to the right text.

How the file begins

The opening lines of sample-nested-config.json, exactly as they appear in the file.

{
  "name": "sample-config",
  "version": 3,
  "enabled": true,
  "deprecated": false,
  "owner": null,
  "ratio": 0.75,
  "offset": -42,
  "large": 1.5e+21,
  "escaped": "Quote \" backslash \\ slash / tab \t newline \n",
  "unicode": "café üñï 日本語",
  "empty": {
    "object": {},
    "array": [],

Preview

Shows the file contents.

Technical details

File name	sample-nested-config.json
Format	JSON (JavaScript Object Notation)
Extension	.json
MIME type	application/json
Size	829 bytes (829 B)
Kind	Text
SHA-256	ec953b49ebd4b1f8be6e9710dbc938cb0e27d6d158e0f9d5fce4951fd7d63916
Created	2026-10-10
Validation	Exact size, signature bytes and structure checked when the file was generated
Preview	Available on this page
Source	Generated for this site; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Data

Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Download from the command line and verify

Fetch the file with curl, then compare its checksum with the SHA-256 value above.

curl -o sample-nested-config.json 'https://sampletestfiles.com/downloads/samples/sample-nested-config.json'
sha256sum sample-nested-config.json     # Linux
shasum -a 256 sample-nested-config.json # macOS

On Windows, run Get-FileHash sample-nested-config.json -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.

About JSON

The standard data format of web APIs: objects, arrays, strings, numbers, booleans and null.

JSON format reference

Where it fits

File parser testing
Well-formed files and deliberate edge cases for testing code that reads CSV, JSON, XML, PDF and more.
API testing
Payloads and attachments for testing REST endpoints that receive, return or transform files.

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