# XSLT Playground

> XSLT Playground (xsltplayground.com) is a free online XSLT editor and tester that runs XSLT 1.0, 2.0, and 3.0 transformations using the Saxon processor. No installation required.

## What it does

- Run and test XSLT stylesheets directly in the browser
- Supports XSLT 1.0, 2.0, and 3.0 (Saxon-powered backend)
- Multiple XML inputs and parameters per transformation
- Trace output to inspect execution step by step
- Up to 3 independent workspaces, each with its own XSLT, XML input, parameters, and result
- Export and import workspaces as JSON to share setups

## Who uses it

Integration engineers, developers working with enterprise middleware (SAP, MuleSoft, Tibco, IBM), XML data engineers, and anyone who needs to write or debug XSLT without a heavy desktop IDE.

## Custom Saxon extensions

The backend exposes custom extension functions under `xmlns:tib="http://www.tibco.com/bw/xslt/custom-functions"`, including:
- `tib:uuid()` — generate a UUID
- `tib:timestamp()` — current timestamp
- `tib:addToDate()` — date arithmetic
- `tib:base64encode()` / `tib:base64decode()`

## Blog

Tutorials, guides, and release notes at blog.xsltplayground.com. Topics include XSLT 3.0 features, debugging patterns, integration architecture, performance tuning, and XML-to-JSON transformations.

## Links

- Tool: https://xsltplayground.com
- Blog: https://blog.xsltplayground.com
- Source: https://github.com/alexandrev/xslt-lab