5 MB JSON sample file
A JSON file of exactly 5,242,880 bytes. It is a valid JavaScript Object Notation file, generated for this site and checked with an independent parser.
Download
sample-json-5mb.json
5 MB5,242,880 bytes
Download 5 MB JSONDirect download. No sign-up and no waiting.
- Type
- application/json
- SHA-256
9a433cace6574f566df6a66c3c1cf374dff19ae4559a33dcd79c7e04c97a7398- Direct URL
https://sampletestfiles.com/downloads/json/sample-json-5mb.json
What is in this file
An object with a "records" array of 15,103 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 | 15,103 |
|---|---|
| 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-5mb.json, exactly as they appear in the file.
{
"generator": "SampleTestFiles",
"description": "Sample JSON file (5 MB) for testing",
"records": [
{"id":1,"uuid":"a6cf3b6b-cd57-4173-a942-a2339c75f449","name":{"first":"Ethan","last":"Zeller"},"email":"ethan.zeller1@example.com","active":true,"…
{"id":2,"uuid":"e86fd25c-cc5a-44ae-a8ee-4439d8d6c68e","name":{"first":"Elena","last":"Underhill"},"email":"elena.underhill2@example.net","active":…Preview
Shows the first 64 KB of the file.
Where 5 MB matters
A 5,242,880-byte file: the size of a phone photo and the minimum part size for S3 multipart uploads. 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 5 MB upload fails on an untuned PHP installation. |
| Vercel Functions | 4.5 MB request body | Larger uploads must go directly to object storage. |
| Amazon S3 multipart upload | 5 MiB minimum part size | This file is exactly one minimum part. |
| AWS Lambda | 6 MB synchronous invocation payload | 5 MB of binary data exceeds it once base64-encoded. |
| Browser localStorage | About 5 MB per origin | Storing this file as text fills the quota. |
| Django | 2.5 MB in memory by default | Larger uploads are streamed to a temporary file instead of held in memory. |
Use this file for
- Simulating photo uploads from phones
- Mocking API responses
- Testing parsers, schema validators and serialisers
Testing notes for JSON
- The JSON standard does not say what happens with duplicate keys, so different parsers keep different values.
- Most parsers read numbers as 64-bit floats, so integers above 2^53 silently lose precision. Send large identifiers as strings.
Technical details
| File name | sample-json-5mb.json |
|---|---|
| Format | JSON (JavaScript Object Notation) |
| Extension | .json |
| MIME type | application/json |
| Size | 5,242,880 bytes (5 MB) |
| Kind | Text |
| SHA-256 | 9a433cace6574f566df6a66c3c1cf374dff19ae4559a33dcd79c7e04c97a7398 |
| 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-json-5mb.json 'https://sampletestfiles.com/downloads/json/sample-json-5mb.json'
sha256sum sample-json-5mb.json # Linux
shasum -a 256 sample-json-5mb.json # macOSOn Windows, run Get-FileHash sample-json-5mb.json -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.
Related files
Questions about this file
- Is this file exactly 5 MB?
- Yes. It is 5,242,880 bytes, which is 5 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 5 MB JSON file?
- An object with a "records" array of 15,103 fictional customer objects, each with nested objects, an array and a nullable field. A final "padding" string brings the file to the exact size.
- What is the structure of the sample JSON?
- An object with a "records" array. Each record has strings, numbers, a boolean, a nullable field, a nested object and an array, so most deserialiser paths are exercised.