HTTP GZIP compression
1. Open IIS server by using inetmgr from windows
Run command box.
2. Click on sites. It shows you all the sites hosted on this server. If you want to to enable http compression for all sites you can configure settings by clicking on server name.
3. Select the site for which you want to configure http compression under Sites node.
4. From right pane of IIS manager click on Compression.
5. Select Enable dynamic content compression for dynamic contents.
6. Select Enable static Content compression for static contents.