JSON ↔ XML

Client

Paste on either side and convert. A small JSON catalog example is pre-filled so you can try JSON → XML immediately—everything stays in your browser.

Learn more: JSON and XML together

Convert between JSON and XML when a service speaks one format and your tool or library expects the other.

How they differ

JSON maps naturally to objects and arrays; XML is a tree of elements and attributes with less standard mapping to “a single obvious JSON shape.” Converters pick common conventions (for example element text becomes a string value, repeated elements become arrays).

Practical tip

After conversion, spot-check important fields—namespaces, attributes, and mixed content can need manual follow-up in edge cases.

JSON & XML

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JSON → XML parses with JSON.parse, wraps arrays and non-objects in a root element when needed, then builds XML with fast-xml-parser. XML → JSON uses the same library (attributes use the @_ prefix; text nodes use #text when needed).

Round-trip is best-effort: XML structure rules differ from JSON (e.g. repeated tags vs arrays). Large documents may be slow.

Sample JSON is pre-filled—click JSON → XML to fill the right panel. All conversion runs in your browser.

Nearby workflows on Toolcore

  • XML formatter — when you only need to indent or minify XML without converting to JSON.
  • JSON formatter — to normalize JSON before another XML ↔ JSON round trip.
  • YAML ↔ JSON — when config authors prefer YAML over XML for the same payload.

Common use cases

  • Turn JSON logs or API payloads into XML snippets for systems that still expect element trees.
  • Pretty-print or minify XML after paste so diffs and reviews are readable.
  • Round-trip small documents when you only need a quick structural view—not a full XSD pipeline.
  • Prototype SOAP-style or RSS-like samples from JSON objects when you control both sides.

Common mistakes to avoid

  • Expecting attribute order and namespaces to round-trip perfectly

    Conversion focuses on data shape. Production integrations should validate against the real schema and namespace rules your service uses.

  • Feeding large or hostile XML without trimming first

    Huge pastes can slow the tab. Untrusted XML can be deeply nested—start with a subtree you trust, then scale up.

  • Confusing this with Apple plist or generic HTML

    Use the plist XML tool for property lists; use HTML entity or markup tools when the payload is not a generic XML ↔ JSON mapping.

FAQ

Is content uploaded?

No. Parsing and conversion run in your browser.

Which side should I trust as the source of truth?

Whichever format your downstream system parses. After conversion, spot-check element names, attributes, and mixed content against that system’s expectations.

Can I validate against XSD or relax NG here?

No—this page only converts and formats. Run schema validation in your build or use the JSON Schema tool after JSON → conversion when the target is JSON Schema.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • json to xml converter
  • xml to json online
  • convert xml to json free

More tools

Related utilities you can open in another tab—mostly client-side.