Web
XML Viewer
Explore XML documents as an expandable tree. Inspect nodes, attributes and text — no upload needed.
Output will appear here…Why use our XML Viewer?
100% private
Everything runs in your browser. Your data never leaves your device — safe for production payloads.
Instant results
No round trips, no rate limits, no login. Format, validate and inspect megabytes of JSON in milliseconds.
Standards-first
Follows RFC 8259 / ECMA-404 exactly. Reports errors with precise line and column diagnostics.
Related developer tools
XML Formatter
Format, indent and validate XML documents. Preserves attributes, CDATA and comments — 100% in-browser.
OpenXML Parser
Parse XML into structured JSON with attributes, text nodes and namespaces preserved. Handy for legacy APIs.
OpenXML Pretty Print
Pretty-print XML with configurable indentation. Auto-validates against parse errors and shows precise line diagnostics.
OpenXML Validator
Validate XML syntax with detailed error messages. Instantly find missing tags, unquoted attributes and malformed structure.
OpenHTML Viewer
Preview HTML markup in a sandboxed live iframe. Toggle raw and rendered views without leaving your browser.
OpenJSON Tree Viewer
Explore nested JSON as an interactive tree — expand, collapse, filter and copy JSON paths of any node.
OpenRelated reading
Deep-dive guides that pair well with the XML Viewer.