Enabling HTTP Compression lead to the quick transmission of HTTP requests between IIS and Your web browser. IIS has 2 types of compression. Static and Dynamic Compression. Following are the steps to Enable/Disable IIS Compression.
1. Click Start >> Administrative Tools >> Internet Information Services (IIS) Manager.
2. Select the Website for which you want to enable compression.
3. Double Click on Compression. 
4. You can tick to enable static/dynamic compression. You can untick to disable the static/dynamic compression.
5. Click on Apply Button in Action Pane to save your settings.