XSL Transformations (XSLT) Version 3.0

[dbushell]

Description

Web browsers support XSLT 1.0 but there are issues (discussed in the "Additional Signals" links below). This proposal is to suggest fixing security issues and implementing the XSLT 3.0 spec allowing new features for web developers.

Specification

https://www.w3.org/TR/xslt-30/

web-feature

xslt

Test Links

• XSLT 3.0 Test Suite https://github.com/w3c/xslt30-test/

Additional Signals

• Should the web platform adopt XSLT 3.0? Should the web platform adopt XSLT 3.0? whatwg/html#11578
• Should we remove XSLT from the web platform? Should we remove XSLT from the web platform? whatwg/html#11523

[github-actions]

This comment was automatically generated based on the information you provided. Please don't edit it.

Below is additional information about the web feature (from the web-features project) which is referenced in your proposal.
If this doesn't accurately correspond to your proposal, please update your initial comment to include web-features: <feature-id>.
To find feature IDs, use the web-features explorer.

Feature XSLT

• ID: xslt
• Name: XSLT
• Description: The XSLTProcessor API transforms XML documents into new XML or HTML documents, using XSLT stylesheets. You can use XSLT to convert data between different XML schemas or to convert XML data into web pages or PDF documents. Also known as Extensible Stylesheet Language Transformations.
• Baseline status: Widely Available
• Docs: XSLTProcessor
• More information: See the web-features explorer

[svgeesus]

The automatically discovered web feature xslt is for XSLT 1.0. So not the same as this proposal for XSLT 3.0.

[wpt-interop]

Thank you for proposing XSL Transformations (XSLT) Version 3.0 for Interop 2026.

We want to let you know it was not selected to be part of Interop this year.

On behalf of the entire Interop team, thank you for submitting it for consideration. We got many more proposals than we could include in this year's project, necessitating some difficult choices. Please note this should not be taken as a comment on the technology as a whole, or our willingness to consider it for Interop in the future. We appreciate the work you put into your proposal, and would welcome your participation in future rounds of Interop.

Posted on behalf of the Interop team.