JPEG is a lossy format that degrades based on the compression scheme you 
choose. But there is no way to take the LOSSY out.

PNG, however, is an LZW based format that is always loss-less:

http://www.libpng.org/pub/png/

There is no reason to switch to JPEG, unless you like degraded pixel-based 
images.

----- Original Message ----
From: Tom Chiverton <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, February 13, 2007 7:41:51 AM
Subject: Re: [flexcoders] should i convert pngs to jpegs before embedding them 
in a flash movie?


On Monday 12 Feb 2007, jpc14_99 wrote:
> When I make a website I design it with PNGs and when it's all good and
> done I convert to jpegs to shrink the file sizes.

It is not a given this will always create smaller files.

> I'm doing the same with my flash/flex movies, but based on the file
> sizes it looks like when the .swf is compiled the PNGs are already
> being compressed.

PNG is a compressed format.

-- 
Tom Chiverton
Helping to centrally cultivate eigth-generation CEOs

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