Docs • Wizard Tools

Features for developers

Relational output

Nested arrays become child tables with _parent_row_id + _index; perfect for SQL joins.

Schema docs & SQL

Download CSVs, schema README, and ready-to-run CREATE TABLE SQL in one click.

Privacy-first

Runs in your browser. No uploads. Plausible is cookieless; AdSense uses cookies only for ads.

Export-ready

Copy, download, or ZIP tables; choose delimiter; explode primitive arrays when needed.

Limitations

Best for datasets under ~20MB for ZIPs; deeply nested mixed arrays stringify.

Trust signals

Clear schema notes, transparent privacy policy, changelog, and contact channel for support.

Paste or drop JSON/CSV. Nothing leaves the browser.
Choose options: delimiter, explode arrays, replace dots, or unflatten CSV.
Convert. Main table keeps _row_id; child tables carry _parent_row_id + _index.
Download CSV/SQL/README or ZIP everything for your warehouse, spreadsheet, or BI tool.

JSON → CSV

[{ "id": "proj-1001", "name": "Demo", "owners": [{ "name": "Ada", "role": "lead" }], "metadata": { "tags": ["demo","beta"] } }]

produces a main table plus an owners child table.

CSV → JSON

id,name,team.0,team.1,metrics.total,metrics.daily.0 can rebuild nested objects when "Unflatten" is toggled.

Main table: primary key _row_id (derived from id/_id/uuid or row index).
Child tables: PK (_parent_row_id, _index); FK _parent_row_id → main._row_id.
Primitive arrays: optionally exploded into child tables with value column.
Objects inside arrays: normalized into child tables; arrays of mixed types are stringified to stay lossless.
Downloads: CSV per table, schema README (Markdown), and SQL DDL.

Is my data uploaded?

No. All parsing and conversions run locally in your browser. Only Plausible (cookieless) and AdSense (ads cookies) load externally.

Where do I place the outputs?

Use CSVs directly in Excel/Sheets, copy to BigQuery/Snowflake loaders, or run the SQL DDL to mirror the schema.

Can I restore nested JSON?

Yes—use CSV → JSON mode with "Unflatten" for dot-path headers. Mixed path styles warn but still convert.

AdSense compliance?

Ad units are rendered; cookies come from AdSense only. See Privacy and Terms for details.