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.

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.

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.

FAQ

Is content uploaded?

No. Parsing and conversion run in your browser.

More tools

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