littlekit.
Free. No account.
Tool reference

JSON to JSON Lines: instructions, examples and limits

Serializes each element of a JSON array as one independent compact JSON line.

Open JSON to JSON Lines
Processing location: your browser

This tool is registered for local processing. Its tool input is handled in the current page; LittleKit’s product analytics do not include the input value.

What it does

Serializes each element of a JSON array as one independent compact JSON line. Embedded line breaks remain escaped inside strings.

Worked example

[{"id":1},{"id":2}] becomes two JSON Lines records.

The example demonstrates the operation. For file-based tools, results depend on the selected file and options.

How the result is produced

Serializes each element of a JSON array as one independent compact JSON line. Embedded line breaks remain escaped inside strings.

Important limits

Processed in this browser. Maximum 100,000 input characters and 10,000 records. JavaScript JSON parsing can round large numbers and keeps the last duplicate key; quote identifiers to preserve them. An empty array produces empty output. Each record may be any JSON value.

Choosing the next step

Treat these tools as a local scratchpad. Validate the format before transforming it, keep secrets out of shared screenshots and remember that a decoded token is not an authenticated token. Use the smallest input that reproduces the problem.

JSON to CSVBuilds CSV columns from the union of object keys, preserving first-seen order.JSON FlattenerConverts nested JSON leaves into JSON Pointer paths.JSON Lines to JSONParses each nonblank line separately and collects the records into one JSON array.

See a mismatch between these instructions and the tool? Report a correction with a non-sensitive example.