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

No. NDJSON to JSON runs in this browser tab. Files stay on the device. Limit note: One JSON value per non-empty line. A bad line fails the whole run. Max 500,000 characters.

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

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

What are the limits of NDJSON to JSON?

One JSON value per non-empty line. A bad line fails the whole run. Max 500,000 characters. Also: One value per non-empty line. Blank lines skipped. A bad line fails. Inverse of JSON to NDJSON. Not CSV.

NDJSON to JSON

Turn JSON Lines into a JSON array.

One value per non-empty line. Blank lines skipped. A bad line fails. Inverse of JSON to NDJSON. Not CSV.

What NDJSON to JSON does

One value per non-empty line. Blank lines skipped. A bad line fails. Inverse of JSON to NDJSON. Not CSV.

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

How to use NDJSON to JSON

Keep this tab on NDJSON to JSON (/ndjson-to-json). Pasting into the wrong Convert tool (for example JSON to NDJSON) changes the job.
Paste or type the input NDJSON to JSON expects. Path hint: ndjson to json. Turn JSON Lines into a JSON array.
Apply the NDJSON to JSON action only. JSON Formatter is a different transform (Pretty-print or minify JSON with indent and optional key sort.). One value per non-empty line. Blank lines skipped. A bad line fails. Inverse of JSON to NDJSON. Not CSV.
Copy the output of NDJSON to JSON if you need it elsewhere. Size/complexity still follows: One JSON value per non-empty line. A bad line fails the whole run. Max 500,000 characters.
If the text job is actually Write a JSON array as one value per line., leave NDJSON to JSON and open JSON to NDJSON.

When not to use NDJSON to JSON

Skip NDJSON to JSON when a neighbor tool matches better — start with JSON to NDJSON or JSON Formatter — or when the description already warns the job will fail. In the tool’s own words: One value per non-empty line. Blank lines skipped. A bad line fails. Inverse of JSON to NDJSON. Not CSV.

Questions about NDJSON to JSON

What does NDJSON to JSON do that other Convert pages on this site do not?: One value per non-empty line. Blank lines skipped. A bad line fails. Inverse of JSON to NDJSON. Not CSV. Short version: Turn JSON Lines into a JSON array.
Does NDJSON to JSON upload my file or text to Tool-You servers?: No. NDJSON to JSON runs in this browser tab. Files stay on the device. Limit note: One JSON value per non-empty line. A bad line fails the whole run. Max 500,000 characters.
Should I use JSON to NDJSON instead of NDJSON to JSON?: Use NDJSON to JSON when you need Turn JSON Lines into a JSON array. Use JSON to NDJSON when you need Write a JSON array as one value per line. They share a category (Convert) but not the same job.
What are the limits of NDJSON to JSON?: One JSON value per non-empty line. A bad line fails the whole run. Max 500,000 characters. Also: One value per non-empty line. Blank lines skipped. A bad line fails. Inverse of JSON to NDJSON. Not CSV.