Mock JSON Data Generator

How to use

1. 1️⃣
   Choose your options above
2. 2️⃣
   Click Generate
3. 3️⃣
   Copy your result

Detailed instructions

1. Select a data schema from the dropdown — choose user, product, order, blog post, or company based on what you need.
2. Set the count field to the number of records you want, between 1 and the maximum allowed.
3. Click Generate to produce the JSON array, then review the output to confirm it matches your expected structure.
4. Click Copy to grab the full JSON, then paste it directly into Postman, a fixture file, your mock server, or a seed script.

Use Cases

• •Seeding a json-server or Mirage JS mock API for local front-end development
• •Populating Postman mock responses with realistic user or order payloads
• •Generating fixture files for Jest or Cypress component and integration tests
• •Bootstrapping a MongoDB insertMany() or PostgreSQL seed script with credible data
• •Prototyping a product catalog or order history UI in Figma or Storybook

Tips

• →Generate 10+ records instead of the default 3 — sparse datasets hide layout bugs that appear with variable string lengths.
• →For Cypress or Jest fixtures, generate one record at a time and hand-edit a single field to create targeted edge-case test files.
• →Combine two schema outputs — for example, users and orders — to build relational fixture data that reflects real API payloads.
• →The ISO timestamps in every record are sortable as strings, so you can use the output directly to test date-sorted list components.
• →Paste the output into jsonlint.com before using it in a strict parser — the output is valid, but this confirms nothing was accidentally truncated during copy.
• →When seeding a local json-server instance, save the array to a db.json file and json-server reads it as a fully functional REST API instantly.

FAQ