Opacity Maps (transparent materials) – Blender Knowledgebase
How to Add Reference Images in Blender | Ex Nihilo Digital | 3D Tutorials
Blender 2.8 Texture Painting: Stencil & Alpha - BlenderNation
Set Alpha Node — Blender Manual
Basic Alpha Transparency – Blender Knowledgebase
Reference Image transparency checkbox - better placement — Right-Click Select
Transparent Reflection Support in Cycles--a "Reflection Catcher" of sorts — Right-Click Select
How to Add Reference Image with Transparency, for 3D modeling in Blender - Part 1 - YouTube
Transparency — Blender Manual
How do I render Alpha Transparency Background in Blender 2.8, Eevee? - Lighting and Rendering - Blender Artists Community
How to Render a Background Image in Blender 2.8 Using a Camera Background Image - Henry Egloff
Transparency — Blender Manual
Alpha Over Node — Blender Manual
Placing Background Images in Blender 2.8 - YouTube
rendering - Can Blender render pngs with the background transparent? - Blender Stack Exchange
World Settings — Blender Manual
Rendering with transparent PNG doesn't render the bloom-effects Eevee - User Feedback - Blender Developer Talk
How to change the background in Blender? - Artisticrender.com
Background Images — Blender Manual
How to Render a Background Image in Blender 2.8 Using a Camera Background Image - Henry Egloff
hdri - Blender 2.8 - Transparent background - Blender Stack Exchange
Blender 2.8 Alpha Background Images Workflow - YouTube
Cannot find Background Images feature in Blender 2.8 - Blender Stack Exchange
Blender 2.8 Transparent GLTF/GLB - Materials and Textures - Blender Artists Community
How To Render Transparent PNG Images In Blender's Cycles And EEVEE Render Engines | Gachoki Studios
How to remove background image from your Cycles renders in Blender 2.8? | DESIGN SYNC
Opacity on image plane - Materials and Textures - Blender Artists Community
rendering - Can Blender render pngs with the background transparent? - Blender Stack Exchange
