Use this form to check an XML document for well-formedness and (optionally) validity. External entity references are included, even when not validating. If the document is well-formed, the parser outputs the corresponding canonical XML.
This service is provided for occasional checking of XML documents. Any other use is prohibited. Some lusers have been abusing this service for purposes that are clearly fraudulent. Note that we keep detailed log files and report all suspected abuses to the relevant authorities.
The checker uses the RXP parser, written by Richard Tobin. RXP is part of the LT XML system, which is available from the Language Technology Group at the University of Edinburgh.
If you find yourself using this service frequently, I suggest you download RXP or LT XML and use it locally.
Some other XML checkers are: