RSS/Atom feed Twitter
Site is read-only, email is disabled

GIMP and transparency

This discussion is connected to the gimp-user-list.gnome.org mailing list which is provided by the GIMP developers and not related to gimpusers.com.

This is a read-only list on gimpusers.com so this discussion thread is read-only, too.

5 of 5 messages available
Toggle history

Please log in to manage your subscriptions.

GIMP and transparency Rick Duley 08 Jan 05:52
  GIMP and transparency Owen 08 Jan 06:05
  GIMP and transparency David Gowers 08 Jan 06:16
   GIMP and transparency Rick Duley 09 Jan 08:58
  GIMP and transparency Bob Long 08 Jan 06:20
Rick Duley
2010-01-08 05:52:39 UTC (about 15 years ago)

GIMP and transparency

I've been poking around manuals and such in GIMP but I cannot find the magic word.
I'm not a computer graphics geek - not by any standards - so I just refer to the functionality I need as "transparency". I need a GIF file with a transparent background. I assume GIMP can handle it, but would someone please tell me where the necessary information to do so is cloistered,

Thanks

Owen
2010-01-08 06:05:17 UTC (about 15 years ago)

GIMP and transparency

I've been poking around manuals and such in GIMP but I cannot find the magic word.
I'm not a computer graphics geek - not by any standards - so I just refer to the functionality I need as "transparency". I need a GIF file with a transparent background. I assume GIMP can handle it, but would someone please tell me where the necessary information to do so is cloistered,

Layers dialog has an opacity slider. Windows->Dockable Dialogs->Layers

play with that

David Gowers
2010-01-08 06:16:02 UTC (about 15 years ago)

GIMP and transparency

On Fri, Jan 8, 2010 at 3:22 PM, Rick Duley wrote:

I've been poking around manuals and such in GIMP but I cannot find the magic word.
I'm not a computer graphics geek - not by any standards - so I just refer to the functionality I need as "transparency".  I need a GIF file with a transparent background.  I assume GIMP can handle it, but would someone please tell me where the necessary information to do so is cloistered,

Thanks

Owen's information is unrelated to what you want, assuming you mean total transparency. (if you mean partial transparency, GIF doesn't support it -- PNG does, though)

First, The layer must have an alpha channel. Right click on the layer in the layers dialog and select 'add alpha channel'. If it's grayed out, it already has an alpha channel.

Second, you must cut out the areas you want to be transparent. If you are trying to do color-keying, the 'select by color' tool will probably be helpful (followed by Edit->Clear to clear the area)

You can then export a GIF (or save one, depending on whether you are using a new or old version of GIMP)

Bob Long
2010-01-08 06:20:28 UTC (about 15 years ago)

GIMP and transparency

Rick Duley wrote:

I've been poking around manuals and such in GIMP but I cannot find the magic word.
I'm not a computer graphics geek - not by any standards - so I just refer to the functionality I need as "transparency". I need a GIF file with a transparent background. I assume GIMP can handle it, but would someone please tell me where the necessary information to do so is cloistered,

Thanks

Layer|Transparency|Add Alpha Channel

Delete areas you want to be transparent.

Rick Duley
2010-01-09 08:58:26 UTC (about 15 years ago)

GIMP and transparency

Thanks David and Owen

I think I have a lot of work to do to get up to pace with this package.

On Fri, Jan 8, 2010 at 1:16 PM, David Gowers wrote:

On Fri, Jan 8, 2010 at 3:22 PM, Rick Duley wrote:

I've been poking around manuals and such in GIMP but I cannot find the magic word.
I'm not a computer graphics geek - not by any standards - so I just refer to the functionality I need as "transparency". I need a GIF file with a transparent background. I assume GIMP can handle it, but would someone please tell me where the necessary information to do so is cloistered,

Thanks

Owen's information is unrelated to what you want, assuming you mean total transparency. (if you mean partial transparency, GIF doesn't support it -- PNG does, though)

First, The layer must have an alpha channel. Right click on the layer in the layers dialog and select 'add alpha channel'. If it's grayed out, it already has an alpha channel.

Second, you must cut out the areas you want to be transparent. If you are trying to do color-keying, the 'select by color' tool will probably be helpful (followed by Edit->Clear to clear the area)

You can then export a GIF (or save one, depending on whether you are using a new or old version of GIMP)