Re: [Gimp-user] Semi Transparency

[Ofnuts <ofnuts gmx com>]

On 19/10/16 19:08, discgolfer wrote:
> I've been looking everywhere for a tutorial on how to get this sort of
> transparency effect on a photo, .. can't find anything. How do you take an image
> and put a gradual transparency effect on it where it starts out 100% on the
> edges then slowly darkens up towards the middle. Like this one:
> http://i.imgur.com/B1gl3Ml.png

The quick solution:

* Layer>Transparency>Add alpha channel
* Make a selection, on what you want to keep
* Select>Invert
* Select>Feather (the value you give is the span of the partial 
transparency)
* Edit>Clear

The "Pro" solution is to use "layer masks": 
http://blog.patdavid.net/2011/10/getting-around-in-gimp-layer-masks.html