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Alpha Cut

by namsil·VFX

Images © namsil. Used for product review; image policy.

Why we like it

Alpha Cut keeps background removal and rotoscoping inside Blender, with no external tools or web services. namsil notes it is optimized for fast workflows rather than pixel-perfect masking, so clean, well-defined subjects give the best results.

What is Alpha Cut?

Alpha Cut is a Blender add-on from namsil that combines two image tools into Blender's image processing workflow. In the Image Editor, one-click background removal instantly generates images with transparent backgrounds. For mask and tracking work, automatic rotoscoping reduces the need for frame-by-frame manual masking. Every operation runs entirely inside Blender, with no external software or web services required.

The workflow is meant to be simple and reusable. Open the Image Editor or a Mask or Tracking workspace, run Background Removal or Automatic Rotoscope, then preview the result and use the generated transparent image or mask. A fast mask preview with a progress display shows how the pass is coming along. namsil states it reduces manual keyframe masking work by up to 70 percent, and the approach suits both single images and video.

namsil notes the tool is optimized for fast workflows rather than pixel-perfect masking. Results vary with image quality, and images or footage with clear, well-defined subjects produce the best output, while complex scenes or fine details may still require manual adjustment. A demo video is available.

Who is Alpha Cut best for?

Alpha Cut is best for blender users removing backgrounds from images, cleaning up and organizing reference images, creating decal assets with transparent backgrounds, and generating masks for tracked footage or rotoscoping.

How much does Alpha Cut cost?

Alpha Cut is completely free to download and use.

Key features

  • One-click background removal in the Image Editor, instantly generating images with transparent backgrounds
  • Automatic rotoscoping for mask and tracking workflows, reducing frame-by-frame manual masking
  • Clean alpha backgrounds and image masks
  • Fast mask preview with progress display
  • Runs entirely inside Blender, with no external software or web services required
  • Reduces manual keyframe masking work by up to 70 percent

Tags

#background removal#rotoscoping#masking#tracking#compositing#Blender add-on#productivity#alpha

Frequently asked questions

Does Alpha Cut work with Blender 4.5 and later?

Alpha Cut supports Blender versions 4.5 through 5.0 and is listed as Blender Extension compatible. It works inside the Image Editor for background removal and in the Mask or Tracking workspaces for automatic rotoscoping. The workflow is designed to be reusable for both single images and video, so you open the relevant editor, run Background Removal or Automatic Rotoscope, then preview and use the generated transparent image or mask. Results depend on image quality, with clear, well-defined subjects producing the best outcomes.

Does Alpha Cut need any external software or online services?

Alpha Cut performs all operations entirely inside Blender, with no external software or web services required. Background removal runs in the Image Editor to create transparent images, while automatic rotoscoping handles masks for tracking workflows without frame-by-frame manual masking. The add-on integrates directly into Blender's image processing workflow and includes a fast mask preview with a progress display. This keeps background removal, alpha cleanup and mask generation in one place rather than moving files between separate programs.

What license is Alpha Cut released under?

Alpha Cut is released under the GPL license and is published as a Blender add-on. It is also marked as a Dev Fund contributor. The developer, namsil, welcomes feedback and feature requests from real-world use to guide future improvements, so reaching out through the developer's page is the way to report issues or suggest changes. For the current license terms and any download details, check the developer's page directly rather than relying on a fixed summary here.

Is Alpha Cut free to download?

Alpha Cut is listed as free in this catalog. Licensing and availability can change over time, so check the developer's page for the current terms before downloading. The add-on is published as a Blender extension under the GPL license and is compatible with Blender 4.5 through 5.0. It bundles one-click background removal and automatic rotoscoping into Blender's image processing workflow, generating clean alpha backgrounds and image masks for both single images and video without external tools.

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