Rename Columns in JSON Lines Data

Rename columns in your JSON Lines / NDJSON data quickly

Drop your JSON_LINES (.jsonl) file here (or click to browse).
(100 MB or less file)
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Rename Columns Tools JSON Lines Tools
Convert JSON Lines using an API
Rename Columns

Renaming columns in your JSON Lines / NDJSON file doesn't have to be complicated. This tool helps you quickly update the names of any fields in your file, making your data easier to understand or better aligned with other systems you use. Whether you're standardizing headers for reporting or just fixing inconsistent labels, you can rename one or many columns in seconds—no spreadsheet software required. It’s especially helpful for cleaning up exports or preparing data for sharing.

JSON Lines / NDJSON

JSON Lines (also known as NDJSON — Newline Delimited JSON) is a text format where each line is a self-contained, valid JSON value, typically a JSON object. It is widely used for streaming data, log files, and large data exports because files can be read and written one record at a time without loading the entire document into memory. Common file extensions are .jsonl and .ndjson.