Test Data Generator
Test Data Generator is built for data engineers who need to generate identifiers, test rows, and mock payloads when building fixtures or load tests on a daily basis. Unlike online utilities that upload your production samples to a third-party server, DataEngUtils runs entirely in your browser: the file is read locally and never leaves your device. It is part of the Pro Parquet and Avro workbench — one of 35 data-engineering tools that read files locally and never upload them. Whether you are debugging a failed dbt run, preparing a handoff for analytics, or validating a file before it lands in Snowflake or BigQuery, Test Data Generator keeps your data on your machine.
Open it in the app
Test Data Generator runs in the DataEngUtils browser app on a Rust engine (Apache Arrow) compiled to WebAssembly — part of the Pro workbench, entirely client-side, and nothing is uploaded.
How it works
1. Open the tool
Open Test Data Generator in the DataEngUtils browser app — no install and no account required.
2. Paste or drop your input
Add the text, config, or file Test Data Generator expects. It is read locally in your browser and never uploaded.
3. Review and export
Inspect the result, copy it to your clipboard, or download the output directly from your browser.
Why not use an online tool?
Online generators tools require uploading your pipeline inputs to a third-party server. For production work, that is a security and compliance risk. DataEngUtils runs a client-side engine in your browser — same convenience, none of the exposure.