XSLT Transformer
Apply an XSL stylesheet to an XML document online with your browser's native XSLT 1.0 engine. Copy or download the result as XML, HTML or text.
What is the XSLT Transformer?
The ByteTools XSLT Transformer applies an XSL stylesheet to an XML document using the browser's built-in XSLTProcessor.
- Native XSLTProcessor — importStylesheet then transformToDocument
- Separate drop zones for the XML document and the stylesheet
- XML, HTML and plain-text output modes
- Clear errors for malformed input or a missing xsl:stylesheet root
- Warns when a stylesheet declares an unsupported XSLT version
- Runs entirely in your browser — nothing is uploaded
How to use the XSLT Transformer
- 1
Paste your XML on the left, or drop the .xml file onto its drop zone.
- 2
Paste your XSL stylesheet on the right, or drop the .xsl file onto its drop zone.
- 3
Choose whether to serialise the output as XML, HTML or plain text.
- 4
Click Run transform, then Copy the result or Download it with the matching file extension.
About the XSLT Transformer
The ByteTools XSLT Transformer applies an XSL stylesheet to an XML document using the browser's built-in XSLTProcessor. The stylesheet is imported, the document is transformed, and the result is serialised so you can read it, copy it or download it as XML, HTML or plain text.
Both inputs are validated before the transform runs. Malformed XML or a malformed stylesheet is reported with the parser's own message, a missing xsl:stylesheet root is called out explicitly, and a stylesheet declaring version 2.0 or 3.0 is rejected up front rather than producing confusing empty output.
The transform runs 100% locally in your browser. Neither the document nor the stylesheet is ever uploaded or stored, so you can convert internal feeds, invoices and data exports without sending anything to a server.
Frequently asked questions
How do I run an XSLT transformation in the browser?
Paste your XML and your XSL stylesheet into the two boxes and click Run transform. The browser's XSLTProcessor applies the stylesheet and the serialised output appears below, ready to copy or download.
Which XSLT version do browsers support?
XSLT 1.0 only. Chrome, Firefox and Safari all ship a 1.0 engine, so xsl:for-each, xsl:value-of, xsl:template and xsl:if work, while XSLT 2.0 and 3.0 features such as xsl:for-each-group do not.
Why is my output empty?
Usually no template matched the document root, or the stylesheet uses a namespace prefix the XML does not declare. Check that a template matches "/" and that any prefixes in match and select patterns are bound in the stylesheet.
Can I produce HTML instead of XML?
Yes. Choose HTML in the output selector and the XHTML namespace declaration is stripped from the serialised markup, so you get a clean fragment you can paste straight into a page.
Are my files uploaded anywhere?
No. Both documents are parsed and transformed in your browser, and nothing is transmitted or stored — which makes the tool safe for internal feeds and customer data exports.
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