Does JSON to NDJSON upload my file or text to Tool-You servers?

No. JSON to NDJSON runs in this browser tab. Files stay on the device. Limit note: Root array only. Compact one value per line. Max 500,000 characters.

Should I use NDJSON to JSON instead of JSON to NDJSON?

Use JSON to NDJSON when you need Write a JSON array as one value per line. Use NDJSON to JSON when you need Turn JSON Lines into a JSON array. They share a category (Convert) but not the same job.

What are the limits of JSON to NDJSON?

Root array only. Compact one value per line. Max 500,000 characters. Also: Root must be an array. Compact JSON per line, no extra spaces. Inverse of NDJSON to JSON. Objects as root fail.

JSON to NDJSON

Write a JSON array as one value per line.

Root must be an array. Compact JSON per line, no extra spaces. Inverse of NDJSON to JSON. Objects as root fail.

What JSON to NDJSON does

Root must be an array. Compact JSON per line, no extra spaces. Inverse of NDJSON to JSON. Objects as root fail.

The interactive controls for JSON to NDJSON load after this article so crawlers still read the instructions. Path /json-to-ndjson is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for JSON to NDJSON.

How to use JSON to NDJSON

Keep this tab on JSON to NDJSON (/json-to-ndjson). Pasting into the wrong Convert tool (for example NDJSON to JSON) changes the job.
Paste or type the input JSON to NDJSON expects. Path hint: json to ndjson. Write a JSON array as one value per line.
Apply the JSON to NDJSON action only. JSON Formatter is a different transform (Pretty-print or minify JSON with indent and optional key sort.). Root must be an array. Compact JSON per line, no extra spaces. Inverse of NDJSON to JSON. Objects as root fail.
Copy the output of JSON to NDJSON if you need it elsewhere. Size/complexity still follows: Root array only. Compact one value per line. Max 500,000 characters.
If the text job is actually Turn JSON Lines into a JSON array., leave JSON to NDJSON and open NDJSON to JSON.

When not to use JSON to NDJSON

Skip JSON to NDJSON when a neighbor tool matches better — start with NDJSON to JSON or JSON Formatter — or when the description already warns the job will fail. In the tool’s own words: Root must be an array. Compact JSON per line, no extra spaces. Inverse of NDJSON to JSON. Objects as root fail.

Questions about JSON to NDJSON

What does JSON to NDJSON do that other Convert pages on this site do not?: Root must be an array. Compact JSON per line, no extra spaces. Inverse of NDJSON to JSON. Objects as root fail. Short version: Write a JSON array as one value per line.
Does JSON to NDJSON upload my file or text to Tool-You servers?: No. JSON to NDJSON runs in this browser tab. Files stay on the device. Limit note: Root array only. Compact one value per line. Max 500,000 characters.
Should I use NDJSON to JSON instead of JSON to NDJSON?: Use JSON to NDJSON when you need Write a JSON array as one value per line. Use NDJSON to JSON when you need Turn JSON Lines into a JSON array. They share a category (Convert) but not the same job.
What are the limits of JSON to NDJSON?: Root array only. Compact one value per line. Max 500,000 characters. Also: Root must be an array. Compact JSON per line, no extra spaces. Inverse of NDJSON to JSON. Objects as root fail.