Free tool
XML validator
Check whether a document is well-formed XML, with the exact line and column of the first error — and optionally validate it against an XSD.
Reference for these formats
XML Schema (XSD)
The dominant XML schema language: namespace-aware, richly typed, and itself written in XML.
XML sitemap
A list of a site's URLs with optional freshness hints, read by every major search engine.
RSS 2.0
The most widely deployed syndication format. Namespace-free at its core, extension-heavy in practice.
SOAP envelope
The message envelope for SOAP web services, still the backbone of banking, logistics and telecom integrations.
Hit a parse error? Every common XML error explained.
Other free tools
- Sitemap validatorCheck a sitemap.xml or sitemap index against the sitemaps.org protocol: URL counts, size limits, lastmod freshness and structure.
- XPath explorerList every element path in a document with its occurrence count, depth and a sample value — plus the attributes declared on each.
- XML to JSON converterConvert an XML document to JSON, keeping attributes and — by default — keeping every value as a string.
- XML to CSV converterFlatten an XML document's structure into CSV: one row per element path or attribute, with counts and sample values.
Get started
Keep the documents you check, and watch them for changes.
A free workspace stores every version, extracts its structure for search, diffs it against the last one, and re-checks monitored URLs on a schedule — with a 5 MB document limit instead of 2 MB.