Extendo 1.5.5 for Mac

Mac Utilities

Updated Aug 21, 2026

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Extendo is an edge extension plugin for After Effects. When you key or roto a plate, the edges often need work, and the usual fix of eroding the matte eats into fine detail like hair. Extendo takes the opposite approach: it pushes the colour from the edge pixels outward, extending clean detail into the area beyond the edge. The idea is similar to PixelSpread in Flame and EdgeExtend in Nuke, tools compositors have relied on for years, brought into After Effects. The result is a plate that composites more naturally over a new background. Updated Aug 21, 2026.

Key Features

• Extends edge pixels outward to preserve fine detail
• Helps keyed and roto plates sit naturally over new backgrounds
• Keeps hair and soft edges that erosion would destroy
• Works as an effect inside After Effects compositions

How to Download

1. Open After Effects on your Mac and save your current project first.
2. Use this link to get the installer: Download from the official site and save the file to your Mac.
3. Run the installer or place the plugin as directed, then restart After Effects.
4. Apply Extendo to your cleaned plate, extend the edges and preview the composite.

System Requirements

Extendo needs a Mac with a recent version of macOS and a supported version of Adobe After Effects, with recent releases listing After Effects 2023 to 2026. It runs as a plugin inside After Effects, so it uses the memory and graphics power of your Mac.

FAQs

Why extend edges instead of eroding them?

Eroding a matte removes the fringe but also removes real detail. Extending the edge colour outward keeps that detail.

Is Extendo similar to tools in Nuke or Flame?

Yes, it brings the same idea as EdgeExtend in Nuke and PixelSpread in Flame to After Effects compositing work.