JSON to XML Converter
Convert JSON to formatted XML in your browser. Keys become elements, @_ prefixed keys become attributes. Free, private, no upload.
About this tool
Convert JSON into indented, readable XML for legacy integrations, SOAP payloads, or feed formats. Object keys become elements; keys prefixed with @_ become XML attributes, mirroring the convention used by the reverse (XML to JSON) tool so conversions round-trip cleanly.
If your top-level value is an array or scalar, it is wrapped in a <root> element automatically, since XML requires a single root.
Common uses
- Produce XML payloads for SOAP or legacy enterprise endpoints from JSON.
- Generate RSS/Atom-style fragments from structured data.
- Create XML test fixtures from JSON you already maintain.
Automate via API
The same conversion is available as a REST endpoint for scripts, pipelines, and backends:
curl -X POST https://payloadly.com/api/v1/tools/json-to-xml \ -H "Content-Type: text/plain" \ -H "X-Api-Key: YOUR_API_KEY" \ --data-binary @input.json
JSON notes
JSON (JavaScript Object Notation) is the standard interchange format for web APIs, config files, and log pipelines. It is strict: keys must be double-quoted, trailing commas are invalid, and comments are not allowed.
- JSON does not support comments; they are stripped or rejected by parsers.
- Trailing commas after the last element are invalid JSON.
- Integers beyond 2^53 lose precision in JavaScript-based parsers.
XML notes
XML remains entrenched in enterprise integrations, SOAP services, RSS/Atom feeds, and sitemaps. Unlike JSON, it distinguishes attributes from child elements and supports namespaces.
- XML attributes are represented with an `@_` prefix when converted to JSON.
- Repeated sibling elements become arrays; single elements become objects.
- XML documents need exactly one root element.
Frequently asked questions
Is my data uploaded to a server?
No. This tool runs entirely in your browser using JavaScript, and there are no ads on the page. Nothing you paste or drop here is uploaded, logged, or stored, and you can verify that yourself: open your browser's developer tools and watch the Network tab while you convert (no requests leave the page), or disconnect from the internet after the page loads and keep working.
What should I watch out for when converting JSON to XML?
JSON does not support comments; they are stripped or rejected by parsers. Trailing commas after the last element are invalid JSON. XML attributes are represented with an `@_` prefix when converted to JSON. Repeated sibling elements become arrays; single elements become objects.
Is there a size limit or a fee?
The browser tool is free with no signup and comfortably handles files up to tens of megabytes (limited by your device's memory). For automated or bulk processing inside your own scripts and pipelines, use the paid REST API.
Related tools
Flatten nested JSON to single-level dot-notation keys in your browser. Ideal for CSV prep, diffing, and key inventories. Free, no upload.
Format and beautify JSON in your browser with 2-space, 4-space, or tab indentation. Errors reported with line and column. Free, no upload.
Minify JSON in your browser: strip all whitespace for smaller payloads and env vars. Shows size savings. Free, private, no upload.
Generate a JSON Schema (draft-07) from sample JSON in your browser. Infers types, required fields, and array item shapes. Free, private.