Enable gzip/deflate in IIS6 without restart

compressioniis-6

I have gone through the steps of enabling static compression for my IIS 6.0 site:

enable it in IIS Manager
enable edit-while-running
add the extensions i need to compress directly to the metabase: js, css
wait for the metabase.xml to update to the latest major history version

It is still not compressing JS and CSS. Is there anyway to enable this without iisreset?

Best Answer

I found the following step by step at http://www.jasonlinham.co.uk/2009/06/turn-on-iis-6-compression-for-css-and.html (including the content here just in case)

Turn on IIS 6 Compression for CSS and Javascript

Enable HTTP Compression

Open IIS Manager Right-click "Web
Site" and select "Services" tab.
Check "Compress Static Files"
Click "Okay"

Specify that "js" and "css" file should be compressed by changing the metabase. By default, IIS 6.0 is set up to compress htm, html, and txt files.

Open a command prompt
cd to C:\Inetpub\AdminScripts (assuming the default location)
run this command (you can change the list of extensions, but only specify static, compressible files here): cscript.exe adsutil.vbs set w3svc/Filters/Compression/GZIP/HcFileExtensions "htm" "html" "txt" "js" "css"

Restart the World Wide Web Publishing Service

Related Solutions

IIS Compression: Enable GZIP and DEFLATE using Powershell

Your initial line of attack with PowerShell is to use WMI. Unfortunately, the root\MicrosoftIisV2 namespace is set up with non-standard security settings which you can't change in PS (not in V1, at least, V2 may be different).

I would suggest looking at the IIS ADSI provider, specifically the IIsCompressionScheme object - http://msdn.microsoft.com/en-us/library/ms524574.aspx

You may be able to work with this in PowerShell by manipulating

$obj = [ADSI]"IIS://MachineName/W3SVC/Filters/Compression/Scheme"

However, ADSI is pretty evil, so you'll have a fairly steep learning curve.

How to disable compression for specific user agents in IIS6

ISAPI Rewrite runs on IIS 6.0, so the solution on that page you linked, should work:

Simply add the following lines to the global rules file (httpd.conf in your ISAPI_Rewrite installation directory):

RewriteEngine on

RewriteCond %{HTTP:User-Agent} MSIE\ [56]
RewriteCond %{HTTP:User-Agent} !SV1
RewriteCond %{REQUEST_URI} \.(css|js)$
RewriteHeader Accept-Encoding: .* $1

If you don't want to spend 99 USD for the license (I think it's worth, I used it myself on IIS 6.0), there is an open source project on CodePlex, which works in a similar way.

Best Answer

Related Solutions

IIS Compression: Enable GZIP and DEFLATE using Powershell

How to disable compression for specific user agents in IIS6

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