Merge pull request #12521 from MicrosoftDocs/main

learn-build-service-prod[bot] · web-flow · commit 4795d2dd234a · 2025-11-18T23:04:54.000Z
Auto Publish – main to live - 2025-11-18 23:00 UTC
diff --git a/reference/5.1/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md b/reference/5.1/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md
@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 11/29/2022
+ms.date: 11/18/2025
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/convertfrom-csv?view=powershell-5.1&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: ConvertFrom-Csv
@@ -147,6 +147,31 @@ When the **UseCulture** parameter is used, be sure that the current culture's de
 separator matches the delimiter used in the CSV strings. Otherwise, `ConvertFrom-Csv` can't
 generate objects from the CSV strings.
 
+### Example 5: Convert CSV data in W3C Extended Log Format
+
+This example shows how to convert CSV data in W3C Extended Log Format to objects.
+
+```powershell
+$logData = @"
+#Version: 1.0
+#Fields: time,cs-method,cs-uri
+00:34:23,GET,/foo/bar.html
+12:21:16,GET,/foo/bar.html
+12:45:52,GET,/foo/bar.html
+12:57:34,GET,/foo/bar.html
+"@
+ConvertFrom-Csv $logData
+```
+
+```Output
+time     cs-method cs-uri
+----     --------- ------
+00:34:23 GET       /foo/bar.html
+12:21:16 GET       /foo/bar.html
+12:45:52 GET       /foo/bar.html
+12:57:34 GET       /foo/bar.html
+```
+
 ## PARAMETERS
 
 ### -Delimiter
@@ -257,6 +282,12 @@ In CSV format, each object is represented by a character-separated list of the p
 the object. The property values are converted to strings, using the `ToString()` method of the
 object. There is no way to export the methods of the object.
 
+`ConvertFrom-Csv` also supports the W3C Extended Log format. Lines starting with the hash character
+(`#`) are treated as comments and ignored unless the comment starts with `#Fields:` and contains
+comma-delimited list of column names. In that case, the cmdlet uses those column names. This is the
+standard format for Windows IIS and other web server logs. For more information, see [Extended Log
+File Format](https://www.w3.org/TR/WD-logfile.html).
+
 ## RELATED LINKS
 
 [ConvertTo-Csv](ConvertTo-Csv.md)
diff --git a/reference/7.4/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md b/reference/7.4/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md
@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 11/29/2022
+ms.date: 11/18/2025
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/convertfrom-csv?view=powershell-7.4&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: ConvertFrom-Csv
@@ -147,6 +147,32 @@ When the **UseCulture** parameter is used, be sure that the current culture's de
 separator matches the delimiter used in the CSV strings. Otherwise, `ConvertFrom-Csv` can't
 generate objects from the CSV strings.
 
+### Example 5: Convert CSV data in W3C Extended Log Format
+
+This example shows how to convert CSV data in W3C Extended Log Format to objects.
+
+```powershell
+$logData = @"
+#Version: 1.0
+#Date: 12-Jan-1996 00:00:00
+#Fields: time,cs-method,cs-uri
+00:34:23,GET,/foo/bar.html
+12:21:16,GET,/foo/bar.html
+12:45:52,GET,/foo/bar.html
+12:57:34,GET,/foo/bar.html
+"@
+ConvertFrom-Csv $logData
+```
+
+```Output
+time     cs-method cs-uri
+----     --------- ------
+00:34:23 GET       /foo/bar.html
+12:21:16 GET       /foo/bar.html
+12:45:52 GET       /foo/bar.html
+12:57:34 GET       /foo/bar.html
+```
+
 ## PARAMETERS
 
 ### -Delimiter
@@ -257,6 +283,12 @@ In CSV format, each object is represented by a character-separated list of the p
 the object. The property values are converted to strings, using the `ToString()` method of the
 object. There is no way to export the methods of the object.
 
+`ConvertFrom-Csv` also supports the W3C Extended Log format. Lines starting with the hash character
+(`#`) are treated as comments and ignored unless the comment starts with `#Fields:` and contains
+comma-delimited list of column names. In that case, the cmdlet uses those column names. This is the
+standard format for Windows IIS and other web server logs. For more information, see [Extended Log
+File Format](https://www.w3.org/TR/WD-logfile.html).
+
 ## RELATED LINKS
 
 [ConvertTo-Csv](ConvertTo-Csv.md)
diff --git a/reference/7.5/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md b/reference/7.5/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md
@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 11/29/2022
+ms.date: 11/18/2025
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/convertfrom-csv?view=powershell-7.5&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: ConvertFrom-Csv
@@ -25,8 +25,7 @@ ConvertFrom-Csv [[-Delimiter] <Char>] [-InputObject] <PSObject[]> [-Header <Stri
 ### UseCulture
 
 ```
-ConvertFrom-Csv -UseCulture [-InputObject] <PSObject[]> [-Header <String[]>]
- [<CommonParameters>]
+ConvertFrom-Csv -UseCulture [-InputObject] <PSObject[]> [-Header <String[]>] [<CommonParameters>]
 ```
 
 ## DESCRIPTION
@@ -148,6 +147,32 @@ When the **UseCulture** parameter is used, be sure that the current culture's de
 separator matches the delimiter used in the CSV strings. Otherwise, `ConvertFrom-Csv` can't
 generate objects from the CSV strings.
 
+### Example 5: Convert CSV data in W3C Extended Log Format
+
+This example shows how to convert CSV data in W3C Extended Log Format to objects.
+
+```powershell
+$logData = @"
+#Version: 1.0
+#Date: 12-Jan-1996 00:00:00
+#Fields: time,cs-method,cs-uri
+00:34:23,GET,/foo/bar.html
+12:21:16,GET,/foo/bar.html
+12:45:52,GET,/foo/bar.html
+12:57:34,GET,/foo/bar.html
+"@
+ConvertFrom-Csv $logData
+```
+
+```Output
+time     cs-method cs-uri
+----     --------- ------
+00:34:23 GET       /foo/bar.html
+12:21:16 GET       /foo/bar.html
+12:45:52 GET       /foo/bar.html
+12:57:34 GET       /foo/bar.html
+```
+
 ## PARAMETERS
 
 ### -Delimiter
@@ -258,6 +283,12 @@ In CSV format, each object is represented by a character-separated list of the p
 the object. The property values are converted to strings, using the `ToString()` method of the
 object. There is no way to export the methods of the object.
 
+`ConvertFrom-Csv` also supports the W3C Extended Log format. Lines starting with the hash character
+(`#`) are treated as comments and ignored unless the comment starts with `#Fields:` and contains
+comma-delimited list of column names. In that case, the cmdlet uses those column names. This is the
+standard format for Windows IIS and other web server logs. For more information, see [Extended Log
+File Format](https://www.w3.org/TR/WD-logfile.html).
+
 ## RELATED LINKS
 
 [ConvertTo-Csv](ConvertTo-Csv.md)
diff --git a/reference/7.6/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md b/reference/7.6/Microsoft.PowerShell.Utility/ConvertFrom-Csv.md
@@ -2,7 +2,7 @@
 external help file: Microsoft.PowerShell.Commands.Utility.dll-Help.xml
 Locale: en-US
 Module Name: Microsoft.PowerShell.Utility
-ms.date: 11/29/2022
+ms.date: 11/18/2025
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/convertfrom-csv?view=powershell-7.6&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: ConvertFrom-Csv
@@ -147,6 +147,32 @@ When the **UseCulture** parameter is used, be sure that the current culture's de
 separator matches the delimiter used in the CSV strings. Otherwise, `ConvertFrom-Csv` can't
 generate objects from the CSV strings.
 
+### Example 5: Convert CSV data in W3C Extended Log Format
+
+This example shows how to convert CSV data in W3C Extended Log Format to objects.
+
+```powershell
+$logData = @"
+#Version: 1.0
+#Date: 12-Jan-1996 00:00:00
+#Fields: time,cs-method,cs-uri
+00:34:23,GET,/foo/bar.html
+12:21:16,GET,/foo/bar.html
+12:45:52,GET,/foo/bar.html
+12:57:34,GET,/foo/bar.html
+"@
+ConvertFrom-Csv $logData
+```
+
+```Output
+time     cs-method cs-uri
+----     --------- ------
+00:34:23 GET       /foo/bar.html
+12:21:16 GET       /foo/bar.html
+12:45:52 GET       /foo/bar.html
+12:57:34 GET       /foo/bar.html
+```
+
 ## PARAMETERS
 
 ### -Delimiter
@@ -257,6 +283,12 @@ In CSV format, each object is represented by a character-separated list of the p
 the object. The property values are converted to strings, using the `ToString()` method of the
 object. There is no way to export the methods of the object.
 
+`ConvertFrom-Csv` also supports the W3C Extended Log format. Lines starting with the hash character
+(`#`) are treated as comments and ignored unless the comment starts with `#Fields:` and contains
+comma-delimited list of column names. In that case, the cmdlet uses those column names. This is the
+standard format for Windows IIS and other web server logs. For more information, see [Extended Log
+File Format](https://www.w3.org/TR/WD-logfile.html).
+
 ## RELATED LINKS
 
 [ConvertTo-Csv](ConvertTo-Csv.md)
diff --git a/reference/module/index.md b/reference/module/index.md
@@ -12,7 +12,7 @@ ms.manager: sewhee
 ms.product: powershell
 ms.topic: landing-page
 quickFilterColumn1: powershell-7.4,windowsserver2025-ps
-quickFilterColumn2: azps-14.6.0,sqlserver-ps
+quickFilterColumn2: azps-15.0.0,sqlserver-ps
 quickFilterColumn3: graph-powershell-1.0,systemcenter-ps-2022
 title: PowerShell Module Browser
 ---
