Generate custom random mockup data locally in your browser. Build your schema, select data types, configure optional parameters, and export to CSV, JSON, TOML, YAML, or XML.
Mockup data, also known as dummy or random mock data, is simulated placeholder information generated to replicate real-world data structures. It is widely used by software developers, database administrators, and QA testers to populate databases, test API endpoints, model applications, and run stress tests without revealing or abusing real user credentials or sensitive keys.
Different development environments require different data serialization formats. This mockup generator supports five of the most widely used formats in industry standard protocols:
Standard data mockers transmit your fields configuration to external API endpoints. Our Mockup Generator operates 100% client-side using optimized JavaScript algorithms in your local browser window. This structure guarantees that no schema parameters, generated mock databases, or credentials are ever sent over the network, providing complete data security and offline compatibility.