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ConvertBox

Mock Data Generator

Generate realistic fake data (names, emails, addresses, dates, UUIDs…) for development and testing. Export to JSON or CSV.

Fields

How to Use

  1. Define your schema by adding fields and choosing types.
  2. Set the row count and output format.
  3. Click Generate to create fresh data.
  4. Copy to clipboard or download as JSON/CSV.
  5. Copy the formatted or generated result directly to your clipboard.
  6. Use the result in your application, configuration, or documentation safely.

All processing is done in your browser, and files are never sent to a server.

Frequently Asked Questions

Faker.js generates synthetic data based on real-world patterns. None of it represents real individuals.
Up to 10,000 rows in a single generation. Larger sets slow down browser rendering.
Currently English locale only. Localized faker data can be added on request.
No. All operations are processed entirely inside your browser's local sandbox using client-side APIs (like WebAssembly, pdf-lib, or HTML5 Canvas). Your files and data never leave your device.
The tool is completely free with no usage limits. However, since processing occurs in your browser's memory, we recommend keeping file sizes under 50MB (especially for heavy files like PDFs or videos) to ensure stability.
No. All tools on ConvertBox are 100% free. We do not insert watermarks, limit features, or require any registration or payment.
Yes. Once the page and its local library dependencies are loaded in your browser, the conversion logic runs completely offline without needing an active internet connection.

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