Answers.Body: <p>Try using Layer--&gt; Auto-trace to trace around the alpha. It will generate a mask which you can then expand.</p>
  <p>Or you could use a Layer Style to get a similar effect with a drop shadow or glow effect.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2021-02-24T16:32:52.500Z
Answers.LastActivityDate: 2024-12-25T13:00:30.990Z
Answers.LastEditDate: 2024-12-25T13:00:30.990Z
Answers.UserDisplayName: tomh
Body: <p>I was wondering if there is a way to expand a fill, outset a shadow or something, around a PNG with transparent background.</p>
  <p>Right now I am using Fill + Simple Choker to expand the contour + CC Composite to bring it to the bottom, and sort of works, but I can expand the outline only a few pixels, like less than 100. Ideally, I'd like to animate it, so I can't just add the outline in Photoshop!</p>
  <p>Is there an alternative way to do that? Thank you in advance.</p>
  <p><a href="https://i.sstatic.net/yTYme.gif" rel="nofollow noreferrer"><img src="https://i.sstatic.net/yTYme.gif" alt="outline around opaque pixels" /></a></p>
  
Tags: <after-effects>
Title: Outline/stroke around transparent-background PNG in After Effects
UserDisplayName: Wes
ThreadText: # Outline/stroke around transparent-background PNG in After Effects
  
  (Asked by: username_0 on 2021-02-24)
  
  I was wondering if there is a way to expand a fill, outset a shadow or something, around a PNG with transparent background.
  
  Right now I am using Fill + Simple Choker to expand the contour + CC Composite to bring it to the bottom, and sort of works, but I can expand the outline only a few pixels, like less than 100. Ideally, I'd like to animate it, so I can't just add the outline in Photoshop!
  
  Is there an alternative way to do that? Thank you in advance.
  
  [![outline around opaque pixels](https://i.sstatic.net/yTYme.gif)](https://i.sstatic.net/yTYme.gif)
  
  **Tags:** after-effects
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2021-02-24. Score: 5 | Accepted answer
  
  Try using Layer--> Auto-trace to trace around the alpha. It will generate a mask which you can then expand.
  
  Or you could use a Layer Style to get a similar effect with a drop shadow or glow effect.
  
  
  ---
  
  