Data Dictionary Generator

What is Data Dictionary Generator?

Data Dictionary Generator is a free, browser-based tool that helps you produce ready-to-use output in seconds. Generate a markdown / CSV data dictionary from any dataset. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

Used by

• Data engineers
• Database administrators
• Analytics engineers
• API developers
• Developers
• Test-data teams

Recommended workflow

1. 1

   Prepare the input

   Generate a sample or helper artifact, then copy it into the workflow that needs it.

2. 2

   Run Data Dictionary Generator

   Review the preview, copy or download the result, and keep everything local in your browser.

3. 3

   Next recommended tool

   Auto Schema Detector: Infer a schema (types, nullability, uniqueness) from any sample dataset.

   Open tool
4. 4

   Then continue with

   Column Relationship Detector: Spot foreign-key candidates and 1:1 / 1:N relationships.

   Open tool
5. 5

   Then continue with

   Metadata Extractor: Extract row count, column types, file size, byte distribution.

   Open tool

Frequently asked questions

How do I use Data Dictionary Generator?

Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Generate a markdown / CSV data dictionary from any dataset.

Is my data uploaded or stored anywhere?

No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.

Is Data Dictionary Generator free?

Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.

What's the maximum file size?

There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.

Do I need to install anything?

No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.