2 MB JSON sample file

A JSON file of exactly 2,097,152 bytes. It is a valid JavaScript Object Notation file, generated for this site and checked with an independent parser. Use it wherever you need a 2 MB sample, test or dummy JSON file.

sample-json-2mb.json

2 MB2,097,152 bytes

Download 2 MB JSON

Created in your browser in a few seconds, then checked against the SHA-256 checksum. No sign-up.

Type: application/json
SHA-256: 67295f140c0c5424f29c8162ae1de1b89f839d96b913f774d7b41009c82b38eb
Delivery: Created in your browser. Files of 2 MB and more have no direct URL (why).

What is in this file

An object with a "records" array of 6,047 fictional customer objects, each with nested objects, an array and a nullable field. A final "padding" string brings the file to the exact size.

Records	6,047
Root type	Object
Value types used	string, number, boolean, null, array, object
Encoding	UTF-8 (ASCII characters only)
Indentation	2 spaces, one record per line

How the file begins

The opening lines of sample-json-2mb.json, exactly as they appear in the file.

{
  "generator": "SampleTestFiles",
  "description": "Sample JSON file (2 MB) for testing",
  "records": [
    {"id":1,"uuid":"47f66630-9ce3-41f0-b882-9f5c6d010770","name":{"first":"Mia","last":"Brennan"},"email":"mia.brennan1@example.org","active":true,"ba…
    {"id":2,"uuid":"30dd1741-0af0-4593-ad68-e76397234e9d","name":{"first":"Freya","last":"Okafor"},"email":"freya.okafor2@example.com","active":true,"…

Preview

Creates the file in your browser and shows its first 64 KB.

Where 2 MB matters

A 2,097,152-byte file: exactly the default upload limit of PHP, and twice the default of nginx and Spring Boot. These are the default limits a file of this size is useful for testing:

System	Limit	Note
PHP	2 MB per uploaded file by default (upload_max_filesize)	A file of exactly 2 MB is accepted; one byte more is refused.
nginx	1 MB by default (client_max_body_size)	Rejected with 413 Request Entity Too Large.
Spring Boot multipart	1 MB per file by default (max-file-size)	Rejected unless the property is raised.
Django	2.5 MB in memory by default	2 MB is held in memory; the 5 MB sample is streamed to a temporary file.
Vercel Functions	4.5 MB request body	Accepted, including as base64 at about 2.8 MB.

All 2 MB sample files

Use this file for

Finding out whether a 1 MB default has been raised
Testing parsers, schema validators and serialisers
Load-testing endpoints with large payloads

Testing notes for JSON

Most parsers read numbers as 64-bit floats, so integers above 2^53 silently lose precision. Send large identifiers as strings.
Parsing a large document with a DOM-style parser needs several times its size in memory. Use a streaming parser or JSON Lines for big data.

JSON format reference

Technical details

File name	sample-json-2mb.json
Format	JSON (JavaScript Object Notation)
Extension	.json
MIME type	application/json
Size	2,097,152 bytes (2 MB)
Kind	Text
SHA-256	67295f140c0c5424f29c8162ae1de1b89f839d96b913f774d7b41009c82b38eb
Created	2026-10-14
Validation	Exact size, signature bytes and structure checked when the generator was built; your copy is checked against the SHA-256 after it is created
Preview	Available on this page
Source	Generated in your browser by this site's generator; 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

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The bytes are the same every time and in every browser, so after saving it you can compare its checksum with the SHA-256 value above.

sha256sum sample-json-2mb.json     # Linux
shasum -a 256 sample-json-2mb.json # macOS

On Windows, run Get-FileHash sample-json-2mb.json -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy, or use a 1 MB file, which has a direct URL.

Related files

Questions about this file

Is this file exactly 2 MB?: Yes. It is 2,097,152 bytes, which is 2 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 2 MB JSON file?: An object with a "records" array of 6,052 fictional customer objects, each with nested objects, an array and a nullable field. A final "padding" string brings the file to the exact size.
Why is there a "padding" field?: JSON has no comments, so a final string member is used to bring each sized file to its exact byte count.

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