XML to JSON Converter
Convert XML documents to pretty-printed JSON instantly — attributes preserved — using fast-xml-parser (MIT). No uploads, no sign-up, works offline.
Why convert XML documents to JSON with fast-xml-parser?
XML is common in legacy web services, RSS feeds, and enterprise data exports. However, modern web frameworks, Node.js applications, and mobile apps consume JSON natively. Converting XML into pretty-printed JSON simplifies data parsing and frontend integration. ToolJiffy converts XML to JSON instantly in your browser.
- Preserves XML Attributes as JSON Properties: Converts element attributes into prefixed JSON keys without losing attribute metadata.
- Automatic Repeated Tag Array Mapping: Transforms repeated XML tags into clean JSON array structures.
- Pretty-Printed Indented JSON Output: Formats output JSON with 2-space indentation for easy inspection and debugging.
- 100% On-Device Browser Security: Converts XML documents locally in browser memory without sending data to cloud servers.
fast-xml-parser XML-to-JSON parsing engine
ToolJiffy leverages the popular MIT-licensed fast-xml-parser library running directly in browser memory. The engine parses XML nodes into an AST, handles text node extraction, preserves attributes, and formats a clean JSON output string.
Whether processing RSS/Atom news feeds, converting XML sitemaps to JSON, or integrating SOAP responses into REST API workflows, fast-xml-parser ensures fast, reliable conversion.
Performance & developer productivity features
Using client-side browser developer tools streamlines coding workflows by removing friction. Developers can instantly paste code, reformat syntax, validate data structures, and copy output without leaving their browser tab or installing heavy IDE extensions.
- Instant Real-Time Processing: Computes results in milliseconds using browser WebAssembly engines.
- Cross-Platform Compatibility: Works identically across Chrome, Firefox, Safari, Edge, and mobile browsers.
Client-side security for private XML feeds
Pasting enterprise XML data feeds, SOAP payloads, or proprietary config files into online converters creates security risks if data is sent to cloud servers.
ToolJiffy operates on a zero-cloud architecture. All conversion runs 100% locally in your browser tab. Your XML data never leaves your device.
Step-by-step guide to converting XML to JSON
- Paste XML code: Copy your XML document or RSS feed into the input editor above.
- Convert to JSON: Click Convert to JSON to transform XML tags and attributes into JSON properties.
- Copy JSON result: Review your formatted JSON output and click Copy Code.
Frequently asked questions
How does XML to JSON conversion work with fast-xml-parser in browser memory?
ToolJiffy uses fast-xml-parser (MIT-licensed) running in browser WebAssembly. It parses XML document trees into native JavaScript objects, converting tags and attributes into structured JSON properties.
How are XML attributes converted into JSON properties?
XML attributes are preserved as prefixed object keys (e.g., `@_id`: "123") inside the converted JSON node, ensuring zero attribute data loss.
How are repeated XML tags converted into JSON arrays?
Repeated XML child tags sharing the same element name (e.g. multiple `<item>` tags) are automatically transformed into a JSON array of objects.
Is my XML data uploaded to any cloud server during conversion?
No, 100% private. All XML parsing and JSON generation run locally inside your browser memory using WebAssembly. Your XML feeds never touch external cloud servers.
Does the converter output clean, formatted multiline JSON?
Yes! The output is pretty-printed with 2-space indentation, making nested objects and converted arrays immediately readable.
Does the converter handle XML namespaces and CDATA sections?
Yes! XML CDATA text blocks and namespace definitions parse cleanly into JSON string values.
What is the main advantage of converting XML to JSON?
JSON is natively supported by JavaScript, modern frontend frameworks (React, Vue), and mobile apps, making converted JSON data much easier to consume.
Is ToolJiffy XML to JSON Converter free without limits?
Yes! ToolJiffy is 100% free with unlimited usages, zero account sign-ups, and zero watermarks.
Explore related developer tools
Convert JSON to XML with JSON to XML Converter, validate XML with XML Validator, validate JSON with JSON Validator, or minify JSON with JSON Minifier.