啟用 IIS 6 GZIP 壓縮：一鍵批次腳本提升網站速度

背景

IIS 6 預設未開啟 GZIP，且無圖形化介面設定。透過修改 Metabase.xml 可啟用，但手動操作繁瑣。本文提供可直接執行的批次腳本 (VBS/CMD)，一鍵完成所有設定。

GZIP 優缺點

• 優點： 壓縮傳輸，網頁開啟速度通常提升 2 倍。
• 缺點： CPU 使用率略增。但 GZIP 僅在首次造訪頁面時壓縮，未變動頁面不重複壓縮 (除非啟用動態壓縮)。

一鍵設定批次腳本 (adsutil.vbs)

將以下內容儲存為 EnableGzip.vbs 或 .cmd 執行：

REM Setup IIsCompressionScheme for deflate
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcCompressionDll "%windir%\system32\inetsrv\gzip.dll"
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcCreateFlags 0
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcDoDynamicCompression TRUE
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcDoOnDemandCompression TRUE
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcDoStaticCompression TRUE
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcDynamicCompressionLevel 9
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcFileExtensions "htm" "html" "txt" "js" "xml" "css"
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcOnDemandCompLevel 9
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcPriority 1
cscript adsutil.vbs set W3Svc/Filters/Compression/DEFLATE/HcScriptFileExtensions "asp" "dll" "exe" "aspx" "asmx"

REM Setup IIsCompressionScheme for GZip
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcCompressionDll "%windir%\system32\inetsrv\gzip.dll"
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcCreateFlags 1
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcDoDynamicCompression TRUE
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcDoOnDemandCompression TRUE
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcDoStaticCompression TRUE
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcDynamicCompressionLevel 9
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcFileExtensions "htm" "html" "txt" "js" "xml" "css"
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcOnDemandCompLevel 9
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcPriority 1
cscript adsutil.vbs set W3Svc/Filters/Compression/GZIP/HcScriptFileExtensions "asp" "dll" "exe" "aspx" "asmx"

REM Setup IIsCompressionSchemes parameters
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcCacheControlHeader max-age=86400
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcCompressionBufferSize 102400
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcCompressionDirectory "%windir%\IIS Temporary Compressed Files"
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcDoDiskSpaceLimiting FALSE
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcDoDynamicCompression TRUE
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcDoOnDemandCompression TRUE
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcDoStaticCompression TRUE
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcExpiresHeader "Wed, 01 Jan 1997 12:00:00 GMT"
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcFilesDeletedPerDiskFree 256
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcIoBufferSize 102400
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcMaxDiskSpaceUsage 0

執行後驗證

重新啟動 IIS，使用線上 GZIP 測試工具或瀏覽器開發者工具檢查回應標頭 Content-Encoding: gzip 即確認生效。