Name: XML Formatter & Validator
Brand: ToolLok

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XML Formatter & Validator

Beautify XML and check well-formedness directly in your browser.

Characters

Lines

Input size

0.0 KB

Indentation

XML InputPaste your XML

Formatted XML

Your formatted XML will appear here...

Maximum input size: 5 MB. Processing takes place in this browser tab. This tool checks XML well-formedness; it does not validate documents against XSD or DTD schemas.

XML formatting and validation features

Check XML well-formedness in your browser.
Detect malformed markup and mismatched tags.
Beautify nested elements with adjustable indentation.
Preserve comments, CDATA and processing instructions.
Upload XML, XSD and SVG files up to 5 MB.
Copy or download the formatted XML output.

Private, browser-based processing

Your XML text is parsed and formatted locally in your browser. The tool does not send document contents to a ToolLok processing server. Avoid using this page on a shared device if your XML contains confidential information.

Frequently asked questions

What does an XML formatter do?

An XML formatter adds consistent indentation and line breaks to make nested XML elements easier to read without intentionally changing the document structure.

Does this tool validate XML?

It checks whether the document is well-formed XML and reports parser errors. It does not perform XSD or DTD schema validation.

Are my XML files uploaded?

No. File reading, parsing and formatting happen in your browser. The selected file contents are not sent to a ToolLok server by this component.

Can I format SVG files?

Yes. SVG is XML-based, so you can paste SVG markup or upload an SVG file and format its XML structure.

What is the maximum file size?

This version accepts files and pasted input up to 5 MB. Very large documents may take longer because formatting runs in the browser tab.

How to use XML Formatter & Validator

1Paste XML or upload an XML file.
2Choose your preferred indentation.
3Click Format & Validate.
4Copy or download the formatted XML.

About XML Formatter & Validator

Format and validate XML online for free. Beautify XML, check syntax errors, customize indentation, upload XML files and download formatted output privately.

This tool runs in your browser. Anything you enter is processed on your device. See our Privacy Policy.

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