Online XSLT Validator

Validate XSLT stylesheets for syntax errors and compatibility with XML documents in real-time.

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About This Tool

This XSLT Validator tool allows you to upload or paste both XML documents and XSLT stylesheets to validate their syntax and compatibility. The tool checks for well-formed XML, valid XSLT elements and attributes, and provides detailed error messages with line numbers. It supports validation of standalone XSLT files as well as testing transformation compatibility with XML source documents. All processing happens client-side in your browser for privacy and speed.

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How to Use

Upload or paste your XML document in the XML input area
Upload or paste your XSLT stylesheet in the XSLT input area
Choose validation mode (XSLT only or XML+XSLT)
Click 'Validate XSLT' to check for errors
View detailed results with line numbers and error descriptions

Frequently Asked Questions

Find Quick Answers

What types of XSLT errors can this validator detect?

The validator detects syntax errors, missing required attributes, invalid element nesting, namespace issues, and XPath expression problems in XSLT 1.0 and 2.0 stylesheets.

Do I need to upload both XML and XSLT files?

No, you can validate XSLT files independently. However, uploading both allows the tool to check transformation compatibility and XPath references in context.

Is my data secure when using this validator?

Yes, all processing happens entirely in your browser. No files are uploaded to any server, ensuring complete privacy for your documents.

What XSLT versions are supported?

The tool supports XSLT 1.0 and most XSLT 2.0 features. It uses the browser's native XSLT processor which typically supports XSLT 1.0, with fallback validation for newer syntax.

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