24bit PNG: Preserve Alpha

[johnnyoffline]

Tom,

I'm going to give you two options here.

1. app.yml
Let me set the default matte color for transparent images for NETPBM or GD or whatever is doing it. The default black background has to go.

2. slot option
It would even be more incredible if this matte color option could be set at the slot level. That could then be extended to variants - I don't know what kind of implications this has for generating thumbnails etc. so that's why it's your second option.

--

As you know, the majority of the sites we make end up being predominantly white so the default should at least be white.

I don't know where this gets set, I suspect it's server level ish. But it's definitely time we at least give ourselves the ability to deal with this at the site level.

:D

Thanks

[johnnyoffline]

Of course, more insanely great than setting a matte color would be to allow for creating thumbnails with an alpha channel. But I'm not Ronald Reagan and we're not building Star Wars!

[blinkPete]

It would be increadibly awesome if the alpha channel could be made to work for both graphics libraries with the media plugin.

[rickybanister]

Tom,

Change of plans. Please research new NetPBM protocols for preserving alpha transparency on uploaded pngs. The button slot really needs this help.

We don't need to set a matte color at all, people should do that in photoshop then upload the image as they want it finalized.

[boutell]

We now have true alpha for PNG uploads if you are using gd. You can expressly shut off netpbm via app.yml.

Support in netpbm will be a separate ticket.