Saturday, May 30, 2015

Radware Accelerates Web Images Delivery w/50% Compression



Radware released the "..newest version of its powerful automated web performance optimization and acceleration solution, FastView® 6 .. includes PerfectImage, proven by research to be the preferred image compression method for both higher user satisfaction and faster web page delivery" 
PerfectImage is an algorithm developed to optimize images - significantly reducing image file size while ensuring minimal image quality degradation. 
By using a Digital Camera Images (DCIM) human vision algorithm, images are carefully compressed using various image compression formats (such as JPEG, JPEG 2000, WebP, and others) so that the final image has less than 1.5% difference vs. the original image which is invisible to the human eye. Another outcome of applying PerfectImage is that the image file size can shrink by up to 80%.

The average compression ratio achieved with PerfectImage is more than 50%. If the average web page payload is 1.8MB and the average image payload is 1.1MB (59%), than applying the PerfectImage algorithm can save 550KB (30%) of payload per page. 
We applied the PerfectImage algorithm on a flight reservation commercial site. The magnifying glass shows how the image size on the original web page (before applying PerfectImage optimization) was 1.7MB and after the optimization the image payload went down to 412Kb – a 75% reduction: 



".. In addition to PerfectImage, FastView 6 also offers deeper web application acceleration, covering more resources inside each web application page. It is the first to optimize resources embedded in and rendered by JavaScript as these resources are not included directly by the web servers and are normally not optimized. FastView 6 now optimizes these tough to find files to make JavaScript oriented applications render even faster.

The technology applies advanced acceleration techniques to dynamically discover client side application calls, allowing enterprises to overcome the challenge of optimizing web pages that are built on a growing number of resources within scripts running on a client’s browser instead of being native to the server side application code
.

See "Radware Provides Faster Web Page Delivery – New Image Compression Technique Helps Reduce Image Payload" - here.

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