• Acceleration
• Setup

Acceleration Tab

Propel Accelerator accelerates downloads of web page images by first pre-compressing the graphics they contain. By default, Propel Accelerator delivers compressed graphic images to your web page at the Very High acceleration level.

Following is a summary of all Acceleration Preferences:

Low acceleration. This setting maintains the original quality of the graphics on the web pages you view. You get good overall acceleration because Propel Accelerator speeds up text, HTML, and some graphics through a technique called lossless compression, but graphics acceleration will be limited to about 1.2X (20% improvement with no loss of quality).

Medium acceleration. At this setting you get better graphics acceleration (2.0X or 100% improvement) with minimal effect on the actual appearance of the image.

High acceleration. This setting has increased acceleration with slightly more image quality degradation. It has usable graphic setting of approximately 3.0X improvement.

Very High acceleration. This setting offers even more graphics compression (~6.0X).

Maximum acceleration. This is the maximum or fastest graphics acceleration setting. At this level, the typical web page with lots of graphics appears significantly faster than without Propel Accelerator. However, there is a trade-off in that most graphics are slightly fuzzy (~9.0X). In addition, some pages have functional graphic elements that can be affected by loss of color.

Note: At an acceleration level of Medium or higher, animated GIFs are disabled.

As you move the slider between the various graphic acceleration level options, you can see the three images changing. These changes reflect - in fact, they actually exaggerate - the effect graphics acceleration has on the images.

Viewing a Page With Different Graphics Acceleration Settings

If you are using a graphics acceleration option above Low Acceleration and you want to view the page at its original quality, change to the higher-quality setting by following these steps:

Web Browser Type	Task
Internet Explorer	Select the Refresh option while holding down the Ctrl Key (Ctrl+Refresh).
Safari	Select Reload Page (Command Key+R) from the View menu.

The images in the refreshed (or reloaded) URL reflect your new settings.

Note: The refresh option is ineffective on recently viewed pages. If you change the Graphic Image Acceleration setting and look at the pages again, the new setting does not affect those pages. For example, if you view Page A at Maximum acceleration, then switch to Medium acceleration, then view Page B, page B will be at Medium acceleration. However, if you then view Page A, only elements of the page that have changed since you last viewed it will appear at Medium acceleration.