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 NDJSON 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 NDJSON lose quality?

No. NDJSON 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 NDJSON files?

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

ParquettoNDJSON

Convert Parquet to NDJSON

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

Parquet to NDJSON 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 NDJSON are for

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

One JSON object per line. What log pipelines and data exports stream.

How to convert Parquet to NDJSON

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

Parquet vs NDJSON: what changes

Parquet compared with NDJSON
	Parquet	NDJSON
Full name	Apache Parquet	Newline-Delimited JSON
File extension	.parquet	.ndjson, .jsonl
Media type	application/vnd.apache.parquet	application/x-ndjson
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 NDJSON: 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 NDJSON 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 NDJSON lose quality?: No. NDJSON 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 NDJSON files?: No installation is needed for the conversion itself — it runs in the browser you already have. Opening the NDJSON afterwards needs whatever software normally handles Newline-Delimited JSON on your device.