7 Best Mockaroo Alternatives in 2026 (Free & Paid)

Mockaroo has been the go-to fake data generator for developers since 2012. But it has real limitations: the free tier caps you at 1,000 rows per download, the UI feels dated, and getting programmatic API access requires a paid plan.

If you've hit those walls, here are the best Mockaroo alternatives — tested for real developer workflows in 2026.

Quick Comparison

1. Dummy JSON Generator — Best Free Browser Tool

dummyjsongenerator.com — Free, no signup, unlimited records.

This is the closest like-for-like replacement for Mockaroo's GUI experience, with a key advantage: it's completely free with no row limits. You can generate up to 1 million records in a single run, which makes it the only free tool suitable for load testing and database bulk seeding.

What it does better than Mockaroo:

• No row limits on the free tier (Mockaroo caps at 1,000)
• 100% client-side — data never leaves your browser (important for privacy-sensitive schemas)
• No account required — open the URL, generate, done
• Supports JSON, CSV, and SQL export

Where Mockaroo wins:

• More field types (Mockaroo has ~180 vs ~30 here)
• API access for programmatic generation (paid on Mockaroo)
• Excel export format

Best for: Developers who need a quick one-off JSON/CSV/SQL file and don't want to create an account or hit a row limit.

2. Faker.js — Best for Programmatic Generation

fakerjs.dev — Open source, npm package, unlimited.

Faker.js is the standard library for generating fake data in JavaScript/TypeScript applications. Unlike GUI tools, you write code — which means you get infinite control over the data shape, relationships, and edge cases.

import { faker } from '@faker-js/faker';

const user = {
  id: faker.string.uuid(),
  name: faker.person.fullName(),
  email: faker.internet.email(),
  avatar: faker.image.avatar(),
  createdAt: faker.date.past().toISOString(),
};

It supports 70+ locales, meaning you can generate culturally appropriate names, addresses, and phone numbers for specific regions — something no GUI tool currently matches.

Best for: Seed scripts, test suite fixtures, CI/CD pipelines, applications where you need data programmatically.

3. json-generator.com — Best for Template-Based JSON

json-generator.com — Free, template-based, browser tool.

JSON Generator uses a Handlebars-inspired template syntax to define your data structure. It's more flexible than Mockaroo for nested and complex JSON structures, but has a steeper learning curve.

[
  '{{ repeat(5) }}',
  {
    id: '{{ objectId() }}',
    name: '{{ firstName() }} {{ surname() }}',
    email: '{{ email() }}',
    age: '{{ integer(18, 65) }}'
  }
]

Best for: Developers who need highly customized JSON shapes with nested arrays and conditional logic.

Limitation: JSON-only output, and the free tier limits output size.

4. GenerateData.com — Best for Multi-Format Export

generatedata.com — Free up to 100 rows, paid for more.

GenerateData supports the widest range of export formats: JSON, CSV, SQL, XML, and even Excel. The UI is clean and the field type library is comprehensive.

The main downside is the 100-row limit on the free tier — unusable for anything beyond quick prototyping. Their paid plans start at around $20/month.

Best for: Teams that need exports in multiple formats, especially XML or Excel, and don't mind paying.

5. Datafaker (Java) — Best for JVM Ecosystems

github.com/datafaker-net/datafaker — Open source, Maven/Gradle package.

If you're building on the JVM (Java, Kotlin, Scala), Datafaker is the Faker.js equivalent. It has 200+ data providers and supports 60+ locales.

Faker faker = new Faker();
String name = faker.name().fullName();
String email = faker.internet().emailAddress();
String city = faker.address().city();

Best for: Java/Kotlin/Spring Boot projects that need fake data in tests or seed scripts.

6. Chance.js — Best Lightweight Browser Library

chancejs.com — Open source, browser and Node.js.

Chance.js is a minimalist random data library that runs in both the browser and Node.js. It's smaller than Faker.js (~25KB) and suitable for simple prototyping or adding to a browser-based app.

const chance = new Chance();
chance.name();    // "John Smith"
chance.email();   // "abc@example.com"
chance.integer({ min: 1, max: 100 }); // 42

Best for: Lightweight browser apps, simple prototypes, when you don't want the full Faker.js dependency.

7. Mockaroo Itself — Best for Teams with a Budget

If you need the API, Excel export, or large team datasets, Mockaroo's paid plan ($50/month) is the most polished option. The UI is well-designed, they have 180+ field types, and the API integration is genuinely useful for CI/CD pipelines.

Best for: Teams with a budget who need API-driven data generation and the widest field type library.

Which Should You Use?

• Just need a JSON/CSV file right now? → Dummy JSON Generator — open it, generate, done. No account.
• Building a test suite in JavaScript? → Faker.js — install it, write seed scripts, get infinite control.
• Need more than 1,000 rows for load testing? → Dummy JSON Generator — it's the only free tool that supports up to 1 million records.
• Need Excel output or API access for your team? → Mockaroo paid plan.
• Java/Kotlin project? → Datafaker.
• Need highly nested custom JSON shapes? → json-generator.com for the template syntax.

The Bottom Line

Mockaroo's main limitation in 2026 is the 1,000-row free tier cap. For most solo developers and small teams, Dummy JSON Generator covers 90% of use cases at zero cost — JSON, CSV, SQL output, no row limits, no account, runs in the browser.

For production-grade test suites that need programmatic generation, Faker.js is the industry standard and pairs well with any of the GUI tools for quick ad-hoc data.