Are my NDJSON 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 NDJSON to CSV 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 NDJSON to CSV lose quality?

NDJSON and CSV describe content in fundamentally different ways, so the conversion is a reconstruction rather than a copy. The result is faithful, but not byte-for-byte equivalent. Nested objects are flattened into columns. Deeply nested data loses its shape.

Do I need to install anything to open CSV files?

No installation is needed for the conversion itself — it runs in the browser you already have. Opening the CSV afterwards needs whatever software normally handles Comma-Separated Values on your device.

NDJSONtoCSV

Convert NDJSON to CSV

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

You can convert NDJSON to CSV free and without an account: drop the file above and the CSV is ready to download in a second or two. The conversion happens inside your own browser, so the file is never uploaded — it works on Windows, Mac, Linux, iPhone and Android, and keeps working with the network switched off.

What NDJSON and CSV are for

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

A table as plain text. Every spreadsheet, database and analytics tool reads it.

How to convert NDJSON to CSV

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

NDJSON vs CSV: what changes

NDJSON compared with CSV
	NDJSON	CSV
Full name	Newline-Delimited JSON	Comma-Separated Values
File extension	.ndjson, .jsonl	.csv
Media type	application/x-ndjson	text/csv

Quality: The result is a close reconstruction rather than an exact copy. Check it before relying on it.
Where it runs: This conversion runs inside your browser. Your file is never uploaded, and it works with the network disconnected.
What can be lost: Nested objects are flattened into columns. Deeply nested data loses its shape.

NDJSON to CSV: common questions

Are my NDJSON 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 NDJSON to CSV 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 NDJSON to CSV lose quality?: NDJSON and CSV describe content in fundamentally different ways, so the conversion is a reconstruction rather than a copy. The result is faithful, but not byte-for-byte equivalent. Nested objects are flattened into columns. Deeply nested data loses its shape.
Do I need to install anything to open CSV files?: No installation is needed for the conversion itself — it runs in the browser you already have. Opening the CSV afterwards needs whatever software normally handles Comma-Separated Values on your device.