JSON to XML API#

Convert a JSON file to XML with a single request to POST /v1/convert/json-to-xml. JSON objects become direct children of <root>, arrays are wrapped in <root><item> elements, and scalar values in <root><value>. By default the response is raw XML bytes; set direct_download=false to receive JSON metadata with a presigned download URL instead.

Endpoint#

POST /v1/convert/json-to-xml

Content-Type: multipart/form-data

Accepted input: .json files (UTF-8 encoded)

Output format: .xml (application/xml)

Authentication#

Requires either a private API key or a JWT token from a public key.

X-API-Key: sk_your_private_key

Or:

Authorization: Bearer <jwt_token>

Request Parameters#

Conversion Rules#

• JSON object {"name": "Alice", "age": 30} becomes: xml <root> <name>Alice</name> <age>30</age> </root>

• JSON array [{"id": 1}, {"id": 2}] becomes: xml <root> <item> <id>1</id> </item> <item> <id>2</id> </item> </root>

• Scalar value "hello" becomes: xml <root> <value>hello</value> </root>

The root element is always <root>. Output is pretty-printed with single-space indentation.

Response#

Direct Download (direct_download=true, default)#

HTTP 200 OK
Content-Type: application/xml
Content-Disposition: inline; filename="data_20260405_123456789.xml"

Returns raw XML bytes.

Metadata Response (direct_download=false)#

{
    "presigned_url": "https://spaces.example.com/...",
    "object_key": "env/files/{project_id}/json-to-xml/data_20260405_123456789.xml",
    "filename": "data_20260405_123456789.xml",
    "file_size": 1234,
    "conversion_time_seconds": 0.05
}

Code Examples#

Python#

import requests

with open("data.json", "rb") as f:
    response = requests.post(
        "https://api.enconvert.com/v1/convert/json-to-xml",
        headers={"X-API-Key": "sk_your_private_key"},
        files={"file": ("data.json", f, "application/json")}
    )

with open("data.xml", "wb") as out:
    out.write(response.content)

Node.js#

const form = new FormData();
form.append("file", fs.createReadStream("data.json"));

const response = await fetch("https://api.enconvert.com/v1/convert/json-to-xml", {
    method: "POST",
    headers: { "X-API-Key": "sk_your_private_key" },
    body: form
});

const xml = await response.text();

PHP#

$ch = curl_init("https://api.enconvert.com/v1/convert/json-to-xml");
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ["X-API-Key: sk_your_private_key"],
    CURLOPT_POSTFIELDS => ["file" => new CURLFile("data.json", "application/json")]
]);
$xml = curl_exec($ch);
curl_close($ch);
file_put_contents("data.xml", $xml);

Go#

body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, _ := writer.CreateFormFile("file", "data.json")
file, _ := os.Open("data.json")
io.Copy(part, file)
writer.Close()

req, _ := http.NewRequest("POST", "https://api.enconvert.com/v1/convert/json-to-xml", body)
req.Header.Set("Content-Type", writer.FormDataContentType())
req.Header.Set("X-API-Key", "sk_your_private_key")
resp, _ := http.DefaultClient.Do(req)

Error Responses#

Limits#

Frequently asked questions#

How do I convert JSON to XML with a REST API?#

Send a multipart/form-data POST request to /v1/convert/json-to-xml with your .json file in the file field and authenticate with an X-API-Key header or a JWT Authorization: Bearer token. The response is the converted XML.

How are JSON arrays converted to XML?#

Each array element is wrapped in an <item> element under the <root> element, so [{"id": 1}, {"id": 2}] becomes <root><item><id>1</id></item><item><id>2</id></item></root>. The root element is always <root>.

Can I get a download URL instead of raw XML bytes?#

Yes. Set direct_download=false to receive a JSON metadata response containing a presigned_url, object_key, filename, file_size, and conversion_time_seconds instead of the raw XML.

Why does the JSON to XML API return 400 Bad Request?#

A 400 is returned when the uploaded file is not a .json file, the content is not valid JSON, or the conversion itself fails. Files larger than your plan's maximum size return 413 Payload Too Large instead.