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Editorial Team
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Asked: 2026-06-01T21:26:36+00:00

I want to compress responses coming from my IIS Express driven web application. We’re

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I want to compress responses coming from my IIS Express driven web application. We’re using IIS Express as local development webserver and IIS on staging and on our build machines. I have found many guides on enabling gzipped responses on IIS but none for IIS Express. Is it even possible?

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  1. Editorial Team

    You can enable compression in IIS Express, just like for IIS.

    1. Start command prompt and go to IIS Express installation folder (%PROGRAMFILES%\IIS Express)

    2. Run following command

    appcmd set config -section:urlCompression /doDynamicCompression:true

    To add compression for JSON run the following two commands from the IIS Express installation directory:

    appcmd set config /section:staticContent /+[fileExtension=’.json’,mimeType=’application/json’]

    appcmd.exe set config -section:system.webServer/httpCompression /+”dynamicTypes.[mimeType=’application/json’,enabled=’True’]” /commit:apphost

    Make sure to restart IIS Express.

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