What is the difference between JSON and XML?

JSON is a plain-text data format that stores nested objects and arrays. It is the standard payload format for web APIs, readable in any text editor, and parsed natively by every major programming language. XML is a tag-based markup format for structured data, where each value sits inside a named element and can carry attributes. It supports namespaces and schema validation, and remains standard in enterprise systems, RSS feeds and document formats.

Will I lose anything converting JSON to XML?

No. Both formats represent the same data model, so the values and their structure come across intact. XML distinguishes attributes from child elements; JSON has no equivalent distinction, so any XML-to-JSON conversion has to pick a convention for attributes.

Anything to watch out for with XML?

XML distinguishes attributes from child elements; JSON has no equivalent distinction, so any XML-to-JSON conversion has to pick a convention for attributes. There is no single canonical XML-to-JSON mapping. Round-tripping is not guaranteed to be lossless.

How is nested data handled?

XML represents nesting directly, so the structure of your JSON is preserved as-is.

What should I know about starting from JSON?

JSON has no comment syntax. Anything stripped from a JSONC or JSON5 source is gone. More broadly: JSON is the default interchange format for web APIs and configuration. It represents nested objects and arrays as plain text, with six value types: string, number, boolean, null, object and array.

When is XML the right choice?

XML suits: systems that require schema validation (XSD); document formats and publishing pipelines; legacy enterprise and SOAP integrations. It is the wrong choice when new web APIs, where JSON is now the expectation.

Is there a file size limit?

No hard limit — the constraint is your browser's memory. Files under 50MB convert in a few seconds. Larger files work but take longer, and a browser tab typically has 250-500MB to play with, so very large batches are better split into smaller groups.

Does this work on mobile?

Yes. The drop zone falls back to your phone's file picker, and the conversion runs on-device exactly as it does on desktop. Large files are slower on a phone because there is less CPU and memory available, but nothing about the workflow changes.

Convert JSON to XML

Convert JSON to XML — same data, different structure, still readable in any editor. Free, in your browser, no upload.

Drop data files to convert

JSON, YAML, XML, CSV, Parquet

Files stay on your device. Open DevTools' Network tab to verify.

Overview

Why convert JSON to XML

XML is the more practical choice here. Systems that require schema validation (XSD)

Comparison

JSON vs XML: what actually differs

JSON compared with XML across encoding, fidelity, file size and support.
Attribute	JSON	XML
Full name	JavaScript Object Notation	Extensible Markup Language
Encoding	Text — editor-readable	Text — editor-readable
What it preserves	Preserves nesting and value types exactly	Rich — namespaces, attributes, schemas, mixed content
Typical size	Verbose — keys repeat on every record	Largest of the text data formats — every value is wrapped in a closing tag
Support	Native in every programming language and every browser.	Parsers in every language; native DOM support in browsers.

How to

How to convert JSON to XML

01
Drop your JSON file
Drag one or more JSON files onto the drop zone above, or click to browse. Files stay on your device — there is no upload step. data formats can't be reliably identified from their bytes alone, so the extension is used to work out the source format.
02
Convert to XML
convert.now parses the JSON and writes it out as XML in a Web Worker, so the page stays responsive even on large files. Nothing is sent anywhere.
03
Download the result
Download the XML file, or a zip of all of them for a batch. Filenames are preserved, with the extension changed to .xml.

Why here

Why convert.now

Private
Files stay in your browser. No upload step. Nothing for anyone to see.
Fast
No queue, no upload wait. Conversion starts the moment you drop a file.
Free
No ads. No file-count limit. No sign-up wall. Just the converter.

FAQ

JSON to XML: common questions

No. The JSON to XML conversion runs entirely in your browser. Files never leave your device, and there is no server involved in the conversion at all. Open DevTools' Network tab and run a conversion if you want to confirm it — you will see the page and its code load, and no request carrying your file.

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Last updated 27 August 2026

Why convert JSON to XML

JSON vs XML: what actually differs

How to convert JSON to XML

Drop your JSON file

Convert to XML

Download the result

Why convert.now

JSON to XML: common questions

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