What about PNG?

[tharding]

What about PNG?

[samsc]

no idea.

did you test it?

[tharding]

It is the 24bit version of GIF.

Supports transparency and is much better at drop shadows than PSD files and much smaller in file size.

Files seem to load up at about the same speed as JPEG but obviously with the advantage of transparency.

Cheers

Toby

[samsc]

do you have one you can post?

i wonder whether its premultiplied alpha?

[tharding]

Here you go.

[samsc]

Your file opens as a single layer transparent image in photoshop which is good.
I have never used png files before- but they seem to work, and do the same thing as tif files.

I have done 4 attachments.

The PNG file in photoshop.
The PNG against white in catalyst
PNG against black in catalyst
PNG against colour in catalyst

Can you check and tell me that this is what you intended?