Posts

A practical triage guide to XSLT and Saxon errors — XPST0017, XPTY0004, XPDY0002, 'Content is not allowed in prolog' and more: what each means and the fastest fix.

An honest comparison of XSLT and MuleSoft DataWeave for XML (and JSON) transformations: portability, tooling, learning curve, performance — and when each one wins.

An honest comparison of the free online XSLT testers that actually support XSLT 3.0 — Saxon HE vs Saxon-JS, multiple inputs, validation and trace. Which to pick and why.

How to use xsl:result-document in XSLT 2.0 and 3.0 to produce multiple output files from a single stylesheet. Covers split by category, multi-format output, serialization control, and streaming.

Free XSL online tester and editor. Run XSL transformations, test XSLT stylesheets and validate XSL-FO output without installing anything.

How to group XML nodes in XSLT 2.0 using for-each-group. Covers group-by, group-adjacent, group-starting-with, and group-ending-with with examples.

Complete guide to XSLT and XPath string functions: substring, contains, replace, tokenize, normalize-space and more. With practical examples.

How to validate XSLT stylesheets online. Catch syntax errors, undefined variables, and namespace issues before they hit production.

Run and test XSLT online with a free editor that supports XSLT 1.0, 2.0, and 3.0. No installation, no signup required.

How XSLT template matching works: priorities, conflict resolution, modes, and default templates. With practical examples.