SheepDev

Mock data generator

Mock data generator lets you generate fictional seeded JSON, CSV, or SQL data from column definitions in your browser.

Mock data generator

⌂ Inputs and results stay in this browser and are not automatically stored or sent.

Settings
Waiting for input

Input & settings

Settings
Column definitions

Output

Waiting for input

Complete text result

How to use

Set column names/types, count, seed, and format to generate reproducible test records. Repeat with identical settings to compare.

Reproduction depends on the schema and implementation version as well as the seed. Data is fictional; seeded generation must not be reused for passwords or authentication tokens.

Examples

5

Principles and limits

Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.

Guides

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