IIS 6.0 開啟 GZip 壓縮完整配置：3 步圖解 + Metabase.xml 精確控制文件類型 + 自動化腳本

收益

• 流量降低 60-80%
• 服務器 CPU 微增，換取帶寬與用戶體驗雙贏
• 頁面加載速度顯著提升

方法一：GUI 三步走（適用快速驗證）

1. IIS 管理器 → 網站屬性 → 服務 標籤 → 勾選 壓縮應用程序文件、壓縮靜態文件
2. 右鍵 Web 服務擴展 → 添加新擴展 → 路徑 C:\WINDOWS\system32\inetsrv\gzip.dll → 允許
3. 命令行執行 iisreset /restart

方法二：Metabase.xml 精確控制壓縮類型（生產環境推薦）

# 1. 停止 IIS（元數據庫寫入需獨佔）
iisreset /stop

# 2. 編輯 C:\WINDOWS\system32\inetsrv\MetaBase.xml
# 找到 
# 修改兩個關鍵屬性：

HcFileExtensions="htm,html,txt,js,xml,css"        # 靜態文件擴展名
HcScriptFileExtensions="asp,dll,exe,aspx,asmx"    # 動態腳本擴展名

# 建議同步設置壓縮等級
HcDynamicCompressionLevel=9
HcOnDemandCompLevel=9

# 3. 啟動 IIS
iisreset /start

方法三：CMD 自動化腳本（一鍵部署，絕對生效）

將以下內容保存為 IIS6-SET-GZIP.cmd 放入 C:\Inetpub\AdminScripts 雙擊運行：

REM ===== 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 ===== 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 ===== 全局參數 =====
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
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcMaxQueueLength 1000
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcMinFileSizeForComp 1
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcNoCompressionForHttp10 FALSE
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcNoCompressionForProxies FALSE
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcNoCompressionForRange FALSE
cscript adsutil.vbs set W3SVC/Filters/Compression/Parameters/HcSendCacheHeaders FALSE

iisreset

驗證

curl -I -H "Accept-Encoding: gzip,deflate" https://your-site.com/
# 應返回
Content-Encoding: gzip
Vary: Accept-Encoding