TOMLtoNDJSON
Convert TOML to NDJSON
Up to 3 files at once, 100 with Pro. Mixed formats are fine.
You can convert TOML to NDJSON free and without an account: drop the file above and the NDJSON is ready to download in a second or two. The conversion happens inside your own browser, so the file is never uploaded — it works on Windows, Mac, Linux, iPhone and Android, and keeps working with the network switched off.
What TOML and NDJSON are for
A configuration format that stays readable without YAML’s indentation traps.
One JSON object per line. What log pipelines and data exports stream.
How to convert TOML to NDJSON
- Drop your TOML file onto this page, or click to pick one.
- Choose NDJSON as the target. The conversion runs inside your browser — the file is never uploaded.
- Download the finished NDJSON file.
TOML vs NDJSON: what changes
| TOML | NDJSON | |
|---|---|---|
| Full name | Tom's Obvious Minimal Language | Newline-Delimited JSON |
| File extension | .toml | .ndjson, .jsonl |
| Media type | application/toml | application/x-ndjson |
- Quality
- Nothing is lost. The result holds exactly the same picture, text or data as the original.
- Where it runs
- This conversion runs inside your browser. Your file is never uploaded, and it works with the network disconnected.
TOML to NDJSON: common questions
- Are my TOML files uploaded anywhere?
- No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.
- Is converting TOML to NDJSON free?
- Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.
- Does converting TOML to NDJSON lose quality?
- No. NDJSON stores the same content without discarding anything, so the result is identical in quality to the original.
- Do I need to install anything to open NDJSON files?
- No installation is needed for the conversion itself — it runs in the browser you already have. Opening the NDJSON afterwards needs whatever software normally handles Newline-Delimited JSON on your device.