JSON to NDJSON Converter
Convert JSON arrays to NDJSON (Newline Delimited JSON) format and back. Each object becomes a single line for streaming and log processing.
NDJSON Output
About NDJSON (Newline Delimited JSON)
NDJSON (also known as JSON Lines or JSONL) is a convenient format for storing structured data where each line is a valid JSON object. Unlike a regular JSON array, NDJSON files can be streamed and processed line-by-line without loading the entire file into memory. This makes it ideal for log files, large data pipelines, and streaming APIs. This converter handles both directions: split a JSON array into individual lines, or merge NDJSON lines back into a JSON array.
Private & free — this tool runs entirely in your browser.
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