Q234497: HOW TO: Specify Additional Document Types for HTTP Compression

Article: Q234497
Product(s): Internet Information Server
Version(s): 5.0
Operating System(s): 
Keyword(s): 
Last Modified: 02-JUL-2002

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Internet Information Services version 5.0 
-------------------------------------------------------------------------------


IN THIS TASK
------------

- SUMMARY

   - Add New Document Types

- REFERENCES

SUMMARY
=======

Microsoft Internet Information Services (IIS) version 5.0 now supports HTTP
compression as defined in the HTTP specification. By default, HTTP compression
only compresses files with a file name extension of "htm," "html," and "txt."
This article explains how to specify additional document types for compression.

Add New Document Types
----------------------

To add the document types for Microsoft Word, Microsoft PowerPoint, and Microsoft
Excel to the default list of documents and restart the IIS services, follow
these steps:

NOTE: The commands in step 3 replace the previously defined file extensions. It
does not append them to the existing file extensions.

1. Open a command prompt session. To do this, click Start, click Run, type "CMD"
  (without the quotation marks), and the click OK.

2. Change the directory to your \InetPub\AdminScripts folder. To do this, type
  "CD \Inetpub\AdminScripts" (without the quotation marks), and then press
  ENTER.

3. Type the following commands:

  CSCRIPT.EXE ADSUTIL.VBS SET W3Svc/Filters/Compression/GZIP/HcFileExtensions "htm" "html" "txt" "doc" "ppt" "xls"

  CSCRIPT.EXE ADSUTIL.VBS SET W3Svc/Filters/Compression/DEFLATE/HcFileExtensions "htm" "html" "txt" "doc" "ppt" "xls"

  IISRESET.EXE  (this will reset Web services)

4. Close the command prompt session.

REFERENCES
==========

For more information about compression formats, visit the following Web sites:

  RFC 1945 (Hypertext Transfer Protocol -- HTTP/1.0)
  ftp://ftp.isi.edu/in-notes/rfc1945.txt

  RFC 1951 (DEFLATE Compressed Data Format Specification version 1.3)
  ftp://ftp.isi.edu/in-notes/rfc1951.txt

  RFC 1952 (GZIP file format specification version 4.3)
  ftp://ftp.isi.edu/in-notes/rfc1952.txt

  RFC 2068 (Hypertext Transfer Protocol -- HTTP/1.1)
  ftp://ftp.isi.edu/in-notes/rfc2068.txt

Additional query words: iis

======================================================================
Keywords          :  
Technology        : kbiisSearch kbiis500
Version           : :5.0
Issue type        : kbhowto

=============================================================================