About XSLT Playground

XSLT Playground is a browser-based XSLT editor built for realistic workloads: multiple inputs and parameters, live execution, and timing hints so you can tune transforms without heavy desktop tooling.

Why I built it

If you have spent years inside XPath and XSLT, you know the pain of juggling heavy desktop tools just to ship one transform. I wanted something faster — a tool that behaves like the lightweight browser utilities we all rely on. So I built XSLT Playground for realistic, multi-input scenarios instead of the single-input demos most tools target.

The gap traditional editors left open

• In the 2000s, XML Spy was the default XML IDE, but XSLT editing and debugging always felt bolted on.
• Oracle JDeveloper and later Altova tools like MapForce improved visualization and isolated execution, yet they remained heavy, licensed, and resource-hungry.
• Most online options stop at one input document and a simple output. Real integrations rarely look that tidy.

Inspired by the best small web utilities

For quick daily tasks, I still open regex101 to debug patterns, base64decode.org to inspect payloads, and epochconverter.com for timestamps. They are fast, focused, and always there. XSLT deserved the same “open browser, get answers” experience — much like jqplay.org did for jq.

What it delivers

• Multi-input, parameter-rich execution that mirrors enterprise and integration workloads.
• Live runs and inline results so you can iterate without context switching.
• Rough timing so you can spot regressions and optimize hotspots.
• Zero install — it works in the browser, with Saxon HE on the backend for full XSLT 1.0 / 2.0 / 3.0 support.

What this site gives you

• Release notes and product updates.
• Short guides and a full XSLT & XPath function reference that mirror common integration tasks.
• Deployment options, including a Helm chart you can point at your own cluster.

Ready to try it? Open xsltplayground.com and run your next transform right now.