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Data Format Converter — JSON YAML XML TOML CSV

Convert structured data between JSON, YAML, XML, TOML, NDJSON and CSV. Paste raw data or point at a file URL, auto-detect the source format, and get a clean converted document plus a dataset row.

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from $0.0015 / file converted

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hiper soft

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Data Format Converter — JSON, YAML, XML, TOML, NDJSON & CSV

Convert structured data between JSON, YAML, XML, TOML, NDJSON and CSV — paste it in or point at a file URL, and get a clean converted document back.

What it does

Converts between JSON, YAML, XML, TOML, NDJSON and CSV in any direction.
Auto-detects the source format so you don't have to specify it.
Accepts raw text or a file URL to fetch and convert.
Runs a batch of many conversions in a single run.
Returns the converted document as a downloadable file plus a tidy dataset row for each conversion.

Use cases

No-code pipelines (n8n / Make / Zapier) — run this from the Apify node, then pass the converted output straight to the next step (a webhook, a database, a file store).
APIs & integrations — turn a YAML config or an XML feed into JSON your app can consume.
Data prep — flatten JSON or NDJSON into CSV for spreadsheets and BI tools.
Migrations — move config or fixtures between formats when switching tools.

Input

{
  "data": "{\"name\":\"Ada\",\"roles\":[\"admin\",\"dev\"]}",
  "from": "auto",
  "to": "yaml"
}

Batch mode:

{
  "items": [
    { "data": "a,b\n1,2", "from": "csv", "to": "json" },
    { "data": "name: Ada", "from": "yaml", "to": "xml" }
  ]
}

Field	Type	Description
`data`	string	Raw source document to convert. Provide this or `fileUrl`.
`fileUrl`	string	Public URL of a file to fetch and convert (used when `data` is empty).
`from`	string	Source format: `auto`, `json`, `yaml`, `xml`, `toml`, `ndjson`, `csv`.
`to`	string	Target format: `json`, `yaml`, `xml`, `toml`, `ndjson`, `csv`.
`items`	array	Optional batch of `{ data, from, to }` objects for many conversions in one run.

Output

Each converted document is saved to the run's key-value store and a row is pushed to the dataset.

{
  "from": "json",
  "to": "yaml",
  "bytes": 34,
  "resultUrl": "https://api.apify.com/v2/key-value-stores/.../records/converted-0001.yaml",
  "ok": true
}

Output schema

Field	Type	Description
`from`	string	Detected or specified source format.
`to`	string	Target format the document was converted to.
`bytes`	integer	Size of the converted document in bytes.
`resultUrl`	string	Direct link to download the converted file.
`ok`	boolean	Whether the conversion succeeded.

FAQ

Which formats are supported? JSON, YAML, XML, TOML, NDJSON and CSV — in any direction.

Do I have to set the input format? No. Leave from on auto and it is detected for you.

Can I convert many documents at once? Yes — pass an items array and each is converted and saved separately.

Can I use it in n8n? Yes. Trigger it from the Apify node and pass the output to the next step. See Apify integrations and the Apify API.

Notes

Original clean-room implementation.

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