JSON and JSONL Converter
Convert JSON arrays to JSONL or NDJSON and line-delimited records back to JSON with exact line errors, record counts, and downloads.
Convert JSON arrays and line-delimited records bidirectionally
JSONL and NDJSON store one complete JSON value on each line. This makes records easy to stream, append, split, inspect, and process independently.
Converting back to a JSON array requires every non-blank line to be valid JSON. ArrayText reports the exact source line for each parsing failure.
JSON and JSONL Converter FAQ
Are JSONL and NDJSON different formats?
They are commonly used names for the same one-JSON-value-per-line structure. File extensions differ, but the data convention is equivalent.
Can one JSONL record span multiple lines?
No. Each line must contain one complete JSON value. Embedded line breaks must be escaped inside JSON strings.
Does JSON to JSONL require an array?
Yes. This focused workflow expects a root JSON array and writes each array element as one line.
Continue working with your data
Evaluate RFC 9535 JSONPath expressions safely against JSON and inspect matched values, normalized paths, and JSON Pointers without executing query code.
JSON FlattenerFlatten nested JSON into path-value pairs or safely unflatten paths using dot, bracket, slash, or custom separators with collision detection.
JSON Merge ToolMerge multiple JSON objects using shallow, deep, or RFC 7396 Merge Patch behavior with configurable array and conflict strategies.
Compare JSON Arrays by KeyCompare arrays of JSON objects by one or more identity properties and report added, removed, changed, unchanged, and duplicate-key records.