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Editorial Team
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Asked: 2026-06-11T19:27:41+00:00

I am trying to deploy a GWT client-only app on a custom web server.

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I am trying to deploy a GWT client-only app on a custom web server. I am using the GWT pre-compress linker like this in my .gwt.xml file:

<inherits name="com.google.gwt.precompress.Precompress"/>

<set-configuration-property name="precompress.leave.originals" value="false" />

<add-linker name="xsiframe" />

And in my html file, I load the javascript with references to nocache.js.gz:

<script type="text/javascript" src="app/app.nocache.js.gz"></script>

The compiler generates compressed javascript files as expected. However, when I run the app, the app is requesting *.cache.js files from the web server, and not *.cache.js.gz files as I was expecting.

I am using a custom web server that does not handle compression on-the-fly, so I am wondering if there is a way to configure GWT compiler to generate code that requests *.cache.js.gz files instead of *.cache.js files? I can’t seem to find any documentation for this, but if I’ve missed something in the docs, I’d appreciate a pointer.

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1 Answer

  1. Editorial Team

    The PrecompressLinker will generate the .gz files.
    However not all browsers support precompressed resources and thus they won’t be loaded by default.

    You have to configure your web-server/backend server so that it check if there precompressed resources available and if the client supports compression and then rewrites the request to retrieve the *.gz files instead of the non compressed ones.

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