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Format, minify, and validate JSON with optional key sorting.
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Your information stays on your device and is not uploaded.
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Define fields such as id, name, and email, then generate mock JSON arrays locally for demos, fixtures, and tests. Data never leaves your browser.
How to use this tool
1. Define fields and types for your schema. 2. Set how many records to generate. 3. Generate fake JSON. 4. Copy the array into a mock API, Storybook fixture, or test file.
Worked example
Example: schema id, name, email with count 3 yields three objects with plausible names and emails for UI demos.
How it works
Define a simple schema with fields like id, name, and email, then generate fake JSON records locally for fixtures, demos, and tests.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data stays on your device and is not uploaded.
FAQ
Frequently asked questions
Is Mock Data Generator free?
Yes. It is free to use and you do not need to sign in or create an account.
Is my data private?
See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.
Can I use Mock Data Generator on mobile?
Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.
Related pages
- Browse all free online tools on Utilnivo
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- JSON Formatter — Format, minify, and validate JSON with optional key sorting.
- UUID Generator — Generate UUIDs for apps, tests, and databases.
- ULID Generator — Generate sortable ULIDs locally for apps and tests.
- JSON Schema Generator — Generate JSON Schema from sample JSON automatically.
- Hash Generator — Generate SHA-256, SHA-384, and SHA-512 hashes.
- JSON Compare — Compare two JSON documents and instantly see added, removed, and changed values. JSON mode highlights changed keys with path hints.
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