- From: Jon Hanna <jon@spin.ie>
- Date: Mon, 29 Jul 2002 11:19:05 +0100
- To: "WAI List \(E-mail\)" <w3c-wai-ig@w3.org>
> Jon, > as far as png files go, as far as my limited (ie one file) test > showed there > was a 5-10% compression saving on gif, hardly comparable with ~300% for > jpeg. Yes, but JPEG acceives that by use of a compression algorithm which is inappropriate for use with a transparency mask, so if such information was needed it would either have to be compressed in a different manner (such as PNG offers), or the transparency information would have to be out-of-band (such as the SVG solution described by others).
Received on Monday, 29 July 2002 06:21:48 UTC