About DataLens

Practical tools for the data work between bigger tasks.

DataLens is a collection of free browser tools by Flazetech. It brings the small tasks around development and analysis into one place: reading an API response, cleaning a list, converting a configuration file, or understanding how database tables connect.

Inspect data

Format JSON, compare documents, and query nested values.

Convert formats

Work across CSV, YAML, XML, JSON, and delimited lists.

Understand structure

Read SQL definitions as connected tables and columns.

A practical approach to data

Formatters, converters, and schema parsing run in your browser. You can copy and download results without an account. API requests and optional sharing involve network access, and each tool explains the difference. Read more about data processing and privacy.

Help improve the tools

If a file does not parse as expected, a small example helps us understand the problem. Send feedback with the tool name and a sample containing no private information.