About XML Validator

This page can be used to check that an XML document – a Google Sitemap, for example – is both well-formed and valid against a specified schema. Schemas published by both Google and sitemaps.org for Sitemaps and Sitemap Indexes are built in and can be selected from the drop-down list. Or you can supply your own schema.

To use this validator, first enter the XML you wish to check under the "XML" tab. The fastest way to enter the XML is to copy and paste from a file on your computer. You can also import a file from your computer – including an XML file compressed with GZip.

Well-Formed XML: If you only want to check that the XML is well-formed, simply click the "Validate" button. (Make sure you have selected "No Schema" from the schemas list.)

Validating XML: If you want to also validate your XML against a particular schema, enter it under the "Schema" tag. Google's and sitemap.org's schemas are built in. Once your schema is in place, click the "Validate" button. If your XML does not validate, a button will appear offering the option for a full explanation.

Clearing Text: To clear all text under the "XML" or "Schema" tabs, hold down the shift key and click in the text area with the left mouse button.

Importing Files: Rather than copying and pasting XML or a schema, you can use the "Import File" button to select a file from your computer that will be uploaded to (but not saved on) the server and then imported under the active tab. Files compressed using GZip and bearing a ".gz" file extension will be automatically decompressed. (Note" The import feature has not been tested for large files and, in any event, there is a maximum limit of about 2MB.)