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About this tool
Convert XML into clean JSON in your browser, with repeated tags turned into arrays and attributes kept under a configurable prefix.
This XML to JSON converter parses an XML 1.0 document — elements, attributes, CDATA, comments and character entities — and rewrites it as JSON using the conventions every mainstream library shares: repeated sibling tags become arrays, attributes are prefixed with @_ so they cannot collide with a child of the same name, and mixed text sits under a #text key. It is aimed at developers moving a legacy SOAP or RSS payload into a JavaScript codebase, and it runs entirely in the page, so payloads with customer data never leave the machine.
Open XML to JSON on AltFTool — it loads instantly in your browser.
Paste or upload your source content.
Choose the target format or conversion mode.
Copy or download the converted result.
Two or more siblings with the same name collapse into a JSON array, so downstream code can map over them without checking the shape first.
Number parsing is skipped for values with a significant leading zero, so a code like 0071 stays the string "0071" rather than becoming 71.
Parsing and serialisation are plain JavaScript in the page — no upload, no API key, no size charge.
Each attribute becomes a key prefixed with @_ by default — an isbn attribute gives "@_isbn". The prefix follows the fast-xml-parser convention and exists so an attribute named title cannot overwrite a child element named title. You can change it to @ or anything else, or drop attributes entirely.
Because JSON has no way to say "this is a list of one". A tag that appears once is emitted as an object, and only the second occurrence turns the key into an array. If your consumer needs a consistent array, normalise it after conversion, or check Array.isArray before mapping.
Mixed content. When an element has both text and child elements — or has attributes plus text — the text cannot be the value of that key, so it is stored under #text. A plain leaf element with no attributes collapses to its string value instead.
Yes. CDATA sections are read verbatim, and the five XML 1.0 predefined entities (& < > " ') plus decimal and hexadecimal character references such as A and A are decoded. Comments, processing instructions and the DOCTYPE declaration are skipped.
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