IIS Dynamic Compression Support
Plesk for Windows supports IIS Dynamic Compression (IIS 7.0 or later required). Enabling this feature allows the web server to compress dynamic content served in response to requests from web browsers supporting HTTP compression. Non-compliant web browsers are served dynamic content uncompressed.
Dynamic compression decreases website loading times and allows for more efficient use of traffic. However, it increases CPU load both for the server and the client. The compressed content is never cached; the compression is performed anew for every request.
Enabling IIS Dynamic Compression
To enable IIS Dynamic Compression, install the “Dynamic Content Compression” component (under “Plesk hosting features”).