The Still Images section contains settings that enable you to remove or alter compression for static images.
By default, extra color compression is disabled.
When enabled, extra color compression is applied only when the client connection bandwidth is below the Extra color compression threshold value. When the client connection bandwidth is above the threshold value or Disabled is selected, extra color compression is not applied.
This setting represents the maximum bandwidth in kilobits per second for a connection below which extra color compression is applied. If the client connection bandwidth drops below the set value, extra color compression, if enabled, is applied.
By default, the threshold value is 8192 kilobits per second.
This setting enables or disables reducing bandwidth beyond progressive compression without losing image quality by using a more advanced, but more CPU-intensive, graphical algorithm.
By default, heavyweight compression is disabled.
If enabled, heavyweight compression applies to all lossy compression settings. It is supported on Citrix Receiver but has no effect on other plug-ins.
This setting controls the degree of lossy compression used on images delivered over client connections that are limited in bandwidth. In such cases, displaying images without compression can be slow.
By default, medium compression is selected.
For improved responsiveness with bandwidth-intensive images, use high compression. Where preserving image data is vital; for example, when displaying X-ray images where no loss of quality is acceptable, you may not want to use lossy compression.
Related policy setting: Lossy compression threshold value
This setting represents the maximum bandwidth in kilobits per second for a connection to which lossy compression is applied.
By default, the threshold value is 2147483647 kilobits per second.
Adding the Lossy compression level setting to a policy and including no specified threshold can improve the display speed of high-detail bitmaps, such as photographs, over a LAN.
Related policy setting: Lossy compression level