XML Formatter Documentation

Pretty-print and validate XML with readable indentation, cleanup, and error feedback.

The browser XML parser validates the document before two-space indentation is added to element-only content. Mixed text and CDATA are not re-indented, and xml:space preserve is respected. Declarations, comments, and processing instructions are retained. DOCTYPE is rejected; limits are 500,000 characters and 100 formatted element levels.

• Inspect a nested XML API fixture with readable element-only indentation.
• Validate matching XML tags while preserving CDATA and mixed content.

Input

Text, files, or values entered in the browser, depending on the tool.

Output

A result shown in the browser that can be reviewed or copied where supported.

• DOCTYPE and external entities are unsupported; this is not DTD or XSD validation.
• Mixed-content descendants are kept unchanged. Browser serialization can normalize quoting and empty-element syntax.

Inputs for this browser-side tool are processed locally and are not sent to SiteIndex. Normal page analytics may still be collected as described in the Privacy Policy. Read the Privacy Policy.