How is the item type chosen when I select "mixed"?

Each item in the array independently rolls between a number, a string, and a boolean, so a mixed array of five items might contain any combination of the three types rather than following a fixed pattern. This mirrors how real-world loosely-typed arrays often look in practice.

Where do the random strings come from?

They're drawn from a small fixed word bank of realistic sample values (names, an email address, and common status words like "active" or "pending"), the same bank this category's other generators use, rather than being randomly generated character sequences.

What's the range for the random numbers?

Whole numbers from 0 to 1000 inclusive. That range was chosen to look like plausible IDs, counts, or scores without producing awkwardly large numbers in a small sample array.

Can I control the array length?

Yes, use the length control above the output; it accepts any whole number from 1 to 100. The array regenerates immediately whenever you change the length or item type.

Random JSON Array Generator

Overview

Introduction

Testing a function that processes a JSON array, or mocking an API response, usually means writing out a handful of plausible array items by hand. This generator produces that array instantly, with a chosen length and item type.

It's a quick way to get throwaway sample data without needing it to mean anything in particular.

What Is Random JSON Array Generator?

A generator that produces a flat JSON array (no nested objects or arrays) of a chosen length, filled with random numbers, strings, booleans, or a mix of all three.

Every item is a plain scalar value, so the output is always valid, immediately parseable JSON with no structure beyond the array itself.

How Random JSON Array Generator Works

For each position in the array, the tool picks a value according to the selected item type: a random integer between 0 and 1000, a random word from a small sample bank, a random boolean, or (in mixed mode) a randomly chosen one of the three per item.

The resulting array is serialized with JSON.stringify and two-space indentation, ready to copy or download directly.

When To Use Random JSON Array Generator

Use it when you need quick placeholder data for a function signature, a UI component, or an API mock that expects an array of scalars.

It's also handy for generating a small test fixture without having to think up realistic-looking values yourself.

Often used alongside Random JSON Object Generator, JSON Array Randomizer and Fakeson Generator.

Features

Advantages

Produces valid JSON instantly with no setup.
Supports number, string, boolean, and mixed item types.
Regenerates instantly when you change the length or type, so you can browse several samples quickly.

Limitations

The string word bank is small and fixed, so values will repeat in longer arrays.
There's no way to generate nested objects or arrays as items; every item is a flat scalar.

Examples

Mixed array of 5 items

Input

length: 5, itemType: mixed

Output

[
  482,
  "admin",
  true,
  "Ada Lovelace",
  17
]

Each item independently rolls between a number, string, and boolean.

Best Practices & Notes

Best Practices

Use "number" or "boolean" item type when testing a function that expects a specific scalar type throughout the array.
Regenerate a few times if the first sample happens to look too uniform for your test case.
Keep the array length small (5-10) for quickly eyeballed test fixtures; use a larger length only when you specifically need volume.

Developer Notes

The mixed item type rolls a fresh type per item rather than picking one type for the whole array, which better resembles how real-world untyped JSON arrays (e.g. from a loosely-typed API) tend to mix scalar types rather than being internally consistent.