XML / JSON / XSD Converter
ConvertConvert between JSON, XML, and XSD in any direction — paste once, see two outputs side by side.
The three-format problem in enterprise integration
Modern software teams constantly move data between three representations: JSON (the native format of REST APIs, NoSQL databases, and JavaScript), XML (the format of SOAP services, HL7, ISO 20022, and legacy enterprise middleware), and XSD (the schema language that constrains XML and is the formal contract for XML-based APIs). Converting between any two of these is common; needing to see all three simultaneously is the advanced case — and the one this tool is built for.
Instead of running three separate conversions across different tools, you paste once and see two outputs. Switch the input mode to change which format you start from; both output panels update instantly.
JSON input mode: see XML and XSD at once
Paste a JSON object and the tool shows you the equivalent XML document in the top panel and an inferred XSD schema in the bottom panel. This is the critical view when you are designing a new API that must expose both REST/JSON and SOAP/XML endpoints — you can see both representations side-by-side and catch structural issues before writing any service code.
XML input mode: see JSON and XSD at once
Paste an XML document and the tool converts it to JSON (top panel) while simultaneously inferring the XSD schema (bottom panel). This is the fastest path for reverse-engineering a legacy XML integration — you get the JSON shape for a REST re-implementation and a schema for validating future messages in a single step.
XSD input mode: see sample XML and JSON at once
Paste an XSD schema (such as an ISO 20022 message type, an HL7 v3 CDA template, or a government submission schema) and the tool generates a sample XML document (top panel) and a sample JSON object (bottom panel). This is the fastest way to onboard to an unfamiliar schema — you see concrete data shapes for both XML and JSON consumers without writing any code.
Everything in the XML / JSON / XSD Converter
Convert between XML, JSON and XSD in one tool. Paste any of the three formats and see the other two side by side, schema included. Free, private, client-side.
Three input modes
Switch between JSON, XML, and XSD as your source — both outputs update instantly.
Dual output
See two target formats side-by-side in resizable panels — no need to run multiple tools.
Schema inference
JSON and XML inputs produce an XSD schema with inferred element types and attributes.
Sample generation
XSD input produces both a sample XML document and a sample JSON object.
Frequently asked questions
It is a three-way converter that handles all six directions between JSON, XML, and XSD in a single view. It is most useful for enterprise developers bridging SOAP/XML systems with REST/JSON APIs, HL7 and FHIR integration teams, and anyone working with ISO 20022 or government XSD schemas.
In JSON mode: the top panel shows the equivalent XML document, and the bottom panel shows an inferred XSD schema derived from your JSON's structure and value types. This is useful when you need to expose a JSON service as SOAP/XML.
In XML mode: the top panel shows the equivalent JSON object, and the bottom panel shows an inferred XSD schema. This is useful when migrating from XML/SOAP to REST/JSON, or when you need to document the schema of an undocumented XML feed.
In XSD mode: the top panel shows a sample XML document matching the schema, and the bottom panel shows a sample JSON object. This is useful when you receive an XSD from a partner (e.g. a bank, government agency, or HL7 organization) and need to understand what a concrete message looks like.
The individual tools (/xsd-to-json, /json-to-xsd, etc.) are streamlined for one specific direction with a simple two-panel layout. This advanced view shows two outputs simultaneously, which is faster when you need to explore all angles of a format — paste once, see everything.
No. Every operation runs entirely in your browser using client-side JavaScript. Your input is never uploaded, logged, or stored on any server — it never leaves your device.
Yes, completely free with no sign-up required. There are no usage limits, no watermarks, and no premium gate on any feature.
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