Zip Compress JPG?

Question:

May I know that which Zip method in your component could give the best compression?
We are trying to Zip some JPEG, and perhaps could reduce the size by half or more.

Answer:

The JPG file format is already a compressed format, so usually very little is gained in trying to compress it — the result is a lot of CPU cycles/time spent with minimal or no gain.  Therefore, the Chilkat Zip component automatically avoids compressing JPG files.  You may force the Zip component to compress JPG’s by calling Chilkat.Zip.RemoveNoCompressExtension(“.jpg”)
See: http://www.chilkatsoft.com/refdoc/csZipRef.html