Blazing Fast API Performance
Ultra-low latency REST API endpoints optimized for high-traffic applications. Our mock data generator delivers realistic fake datasets in milliseconds, perfect for integration testing and load testing scenarios.
Free Fake Data API Generator for Testing
Generate realistic mock data instantly for development, testing, and prototypes. DataMock is a powerful fake data API that delivers schema-aware datasets in JSON, CSV, SQL, or Excel formats. Perfect for developers who need reliable test data without privacy concerns or compliance headaches. Start generating synthetic data in seconds with our free mock data generator.
What makes DataMock the best fake data API
100% Synthetic Test Data
Completely fake and privacy-safe data. Generate realistic user profiles, emails, transactions, and more without any personal information. Ideal for GDPR-compliant testing, demos, and development environments.
Schema-Aware Generation
Intelligent mock data that respects your data models automatically. Our fake data API understands relationships between fields and generates coherent datasets that match real-world patterns and validation rules.
Globally Distributed API
Edge-deployed on a global CDN network for consistent, fast responses worldwide. Access our fake data generator from anywhere with minimal latency, ensuring reliable test data generation across all regions.
Use cases for our mock data generator API
From rapid prototyping to comprehensive testing, DataMock's fake data API powers every stage of modern software development
Frontend Development & Prototyping
Build UI components and prototypes faster with our fake data API. Generate realistic user profiles, product catalogs, and dynamic content without backend dependencies.
- Mock user dashboards with realistic data
- Populate e-commerce product listings
- Test form validation with varied data sets
- Create demo presentations with fake but believable content
Backend & API Integration Testing
Test your backend services and API integrations with comprehensive mock data. Our test data generator creates realistic payloads that mirror production scenarios.
- Integration testing with diverse data scenarios
- Load testing with large fake datasets
- Validate data transformation pipelines
- Test error handling with edge cases
QA & Automated Testing
Power your automated test suites with deterministic fake data using seeds. Generate reproducible test data for consistent QA workflows across environments.
- Seed-based reproducible test scenarios
- End-to-end testing with realistic data flows
- Cross-browser testing with consistent datasets
- Performance testing with controlled data volumes
Development Environments & Demos
Populate staging and development databases with privacy-safe synthetic data. Perfect for demos, training, and collaborative development without exposing real user information.
- Seed development databases safely
- Create realistic demo environments
- Onboard new developers with sample data
- Build training environments without PII risks
Generate realistic data in seconds
Fetch JSON from REST and start building immediately.
GET https://api.datamock.dev/v1/iot-telemetry
{
"meta": {
"status": "OK",
"code": 200,
"type": "ok",
"locale": "en_US",
"requestId": "399f33e8-3da4-4bd0-af16-050e2ea9eb3f",
"generatedAt": "2025-11-21T14:50:08.022Z",
"total": 1,
"seed": "1dyuVA.IPY5wq7WPaRyFVKmNPElEquoAO1-zv2dykpORO6GGfEjOoUEREErb0uc4Ycq0Eexw46T0PgQ",
"isTest": true,
"message": "SUCCESS"
"data": [
{
"deviceId": "dev_26fd6b2f",
"sessionId": "sess_143c",
"deviceType": "security_camera",
"firmwareVersion": "v1.3.19",
"ipAddress": "210.109.182.39",
"macAddress": "F1:43:C6:5A:6E:87",
"signalStrength": -48,
"networkType": "zigbee",
"location": {
"lat": 40.6516,
"lng": -73.7711,
"zone": "zone-b",
"accuracy": 24.3
"status": "low_battery",
"batteryLevel": 2,
"uptimeSeconds": 2507351,
"lastSync": "2025-11-20T16:53:28.004Z",
"temperatureInternal": 79.8,
"memoryUsage": 74.1,
"cpuUsage": 30.3,
"sensors": {
"motionDetected": false,
"lightLevel": 721.08,
"recordingStatus": "recording",
"faceDetection": true,
"soundLevel": 28
"alerts": [
{
"code": "WARN_BATTERY_LOW",
"message": "Battery level critical (<10%)",
"severity": "warning",
"timestamp": "2025-11-21T14:50:08.016Z"
The best mock data generator for modern development teams
Developers and QA teams worldwide rely on DataMock's fake data API to accelerate their development cycles. Generate realistic test data instantly for frontend prototypes, backend testing, API integration tests, and demo environments. Our mock data generator creates schema-aligned datasets with coherent relationships, ensuring your tests mirror real-world scenarios. Use our free fake data API to build faster without compromising on data quality or privacy compliance.
Start generating mock dataPrivacy-safe test data
All generated data is 100% synthetic and secure for public repositories, CI/CD pipelines, and development environments. No real user data, ever.
What’s new
Latest improvements and fixes directly from our main branch.
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