JSONPlaceholder is a free online REST API that you can use whenever you need some fake data. It can be in a README on GitHub, for a demo on CodeSandbox, in code examples on Stack Overflow, …

This is a collection of dummy JSON files in various sizes to use as test data for the JSON viewer.

Free sample JSON files for developers. Download JSON data and examples in different sizes and formats for testing and integration.

Free JSON Sample Data Generator from JSON Schema. Create realistic mock JSON data, generate test datasets, and produce sample JSON for APIs. Supports all JSON Schema versions. No signup …

A free generic JSON test data generator tool. Generate large amounts of random data for demos, exploring new tools and performance benchmark testing.

Comprehensive collection of sample JSON data with real-world examples. Copy-ready JSON samples for testing APIs, learning JSON structure, and development.

Download ready-to-use sample JSON files for testing APIs, prototyping frontends, and debugging. Includes users, products, GeoJSON, and API errors.

Generate realistic JSON mock data for testing. Create fake users, addresses, names, emails with customizable schemas.

A free test data generator and API mocking tool - Mockaroo lets you create custom CSV, JSON, SQL, and Excel datasets to test and demo your software.

Generate realistic mock JSON data from field definitions with multi-locale support. Create test data for APIs, databases and frontend development with custom patterns and constraints.