xslmin

An XSLT minifier

The primary goal of this tool is to reduce the size of XSL files used in client side XSLT in web browsers.

xslmin performs the following minification tasks:

Deletes unused templates
Deletes unused variables
Deletes unused parameters
Strips comments
Strips ignorable whitespace
Renames local variables
Renames local parameters
Renames global variables
Does NOT rename global parameters (so you can still inject them)
Renames named templates
Normalizes space in attribute token lists, e.g. xsl:preserve-space
Collapses xsl:elements to short form e.g. <element name="foo"> becomes <foo>

Inlines xsl:attributes e.g.

<element name="foo">
    <attribute name="bar">
        <value-of select="$foobar"></value-of>
    </attribute>
</element>

becomes

<foo bar="{$foobar}">

Usage

You can download the latest JAR from Maven Central

Executable Jar

java -jar xslmin.jar inputXslPath outputXslPath [-p[reserve]]

Ant Task

The easiest way is to use maven and the maven-antrun-plugin to fetch xslmin and then use it in your ant build like so:

<path id="project.class.path">
    <path path="${maven.plugin.classpath}"/>
</path>

<taskdef name="xslmin"
    classname="com.github.ricksbrown.xslmin.ant.MinifyTask"
    classpathref="https://github.com/ricksbrown/xslmin/blob/master/project.class.path"/>

<xslmin in="${srcdir}/myxsl.xsl" out="${outdir}/myxsl.xsl" preserve="true"/>

Releases

2.3.0

Existing users note, the java classes have been repacked to the github namespace com.github.ricksbrown.xslmin.

Now available on Maven Central

<dependency>
    <groupId>com.github.ricksbrown</groupId>
    <artifactId>xslmin</artifactId>
    <version>2.3.0</version>
</dependency>

TODO

Merge identical templates
Detect recurring long text and move to global variable

ricksbrown / xslmin