Convert JSON Lines to JSON
Turn JSON Lines / NDJSON files (.jsonl) into JavaScript Object Notation (.json) in seconds. Drop one file or a whole batch: the conversion happens right in your browser, with no sign-up, no watermark and no upload.
JSON to JSON Lines insteadHow to convert JSON Lines to JSON
- 1Drop your JSON Lines files into the box above, or click to choose them.
- 2JSON is already selected. Adjust the options if you like.
- 3Click Convert and download your JSON files.
Good to know
- Column types such as numbers and true/false values are detected, and you can set the delimiter and header row.
Frequently asked questions
Is converting JSON Lines to JSON free?
Yes. There is no sign-up, no watermark and no limit on the number of files.
Are my files uploaded?
No. Everything runs in your browser, so your files are never uploaded to a server. That also makes it fast, because nothing has to travel over the network.
Will I lose quality converting JSON Lines to JSON?
JSON stores the result with some loss. With the default settings the difference is hard to notice, and you can raise the quality if you need to.
Can I convert several files at once?
Yes. Drop as many JSON Lines files as you like. They are converted one after another and you can download them individually or as a ZIP.
Is there a file size limit?
There is no fixed limit. Very large files depend on your device's memory, since the conversion runs locally.
What is JSON Lines?
JSON Lines stores one JSON record per line, which is handy for logs, streaming and large datasets.
What is JSON?
JSON is the standard data format of the web and APIs, able to hold nested objects and lists.