Are my Parquet files uploaded anywhere?

No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.

Is converting Parquet to JSON free?

Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.

Does converting Parquet to JSON lose quality?

No. JSON stores the same content without discarding anything, so the result is identical in quality to the original.

Do I need to install anything to open JSON files?

No installation is needed for the conversion itself — it runs in the browser you already have. Opening the JSON afterwards needs whatever software normally handles JavaScript Object Notation on your device.

ParquettoJSON

Convert Parquet to JSON

Up to 3 files at once, 100 with Pro. Mixed formats are fine.

Parquet to JSON conversion is not running yet. This page describes what it will do; the Parquet conversions that work today are linked at the bottom.

What Parquet and JSON are for

Columnar storage for large datasets. Far smaller and faster to query than CSV.

The data format of the web. Nested structures, read by every programming language.

How to convert Parquet to JSON

Drop your Parquet file onto this page, or click to pick one.
Choose JSON as the target. The conversion runs inside your browser — the file is never uploaded.
Download the finished JSON file.

Parquet vs JSON: what changes

Parquet compared with JSON
	Parquet	JSON
Full name	Apache Parquet	JavaScript Object Notation
File extension	.parquet	.json
Media type	application/vnd.apache.parquet	application/json
Compression	Lossless — nothing is discarded	—

Quality: Nothing is lost. The result holds exactly the same picture, text or data as the original.
Where it runs: This conversion is not available yet. The page describes what it will do once the engine ships.

Parquet to JSON: common questions

Are my Parquet files uploaded anywhere?: No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.
Is converting Parquet to JSON free?: Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.
Does converting Parquet to JSON lose quality?: No. JSON stores the same content without discarding anything, so the result is identical in quality to the original.
Do I need to install anything to open JSON files?: No installation is needed for the conversion itself — it runs in the browser you already have. Opening the JSON afterwards needs whatever software normally handles JavaScript Object Notation on your device.