10-21-2017, 09:10 PM
(10-21-2017, 08:01 PM)IndianAgent47 Wrote: Hi everyone. I downloaded GIMP a week ago. I want to make a thumbnail for my YouTube video, where 3 pictures of 1920*1080 resolution are put in three equal parts in a 1920*1080 picture. I want them to be divided by three slashes (/) rather than a straight line. Thanks!
Use (File > Open As Layers) to open your 3 images. You will get 1 image with 3 layers, one image per layer.
On the two top layers, Right Click on the layer and Add Layer Mask. Use White (full opacity).
In the layers dialogue, select one of the layer masks. ie click on the layer mask next to the image thumbnail.
Use one of the selection tools and select the portion of that image that you want to be transparent. Bucket fill it with black to make it transparent.
Do the same for the next layer mask.
See the image below, noting the layer masks and black areas.