Allow Base Color and Alpha Map textures to be combined on export · Issue #343 · KhronosGroup/glTF-Blender-IO · GitHub
Render Alpha in Alpha channel in Blender 2.8 - Compositing and Post Processing - Blender Artists Community
How to use alpha transparent textures in Blender - Artisticrender.com
How to show PNG transparency texture in Blender - cgian.com
image - Blender 2.9; when using png with Alpha Channel for texture blender displays alpha channel as black instead of transparent - Blender Stack Exchange
Erase a stroke in an alpha image not possible - User Feedback - Developer Forum
Denoising Alpha channel into file output node - Compositing and Post Processing - Blender Artists Community