Sprite Outline Generator
Free sprite outline generator. Add an outline of any color and thickness around a transparent PNG sprite, then export the PNG. Runs in your browser.
Drop a transparent PNG sprite
How to use the Sprite Outline Generator
- Drop a PNG sprite with a transparent background.
- Pick the outline color and thickness.
- Click Export PNG.
Using it in your game
Use the outlined copy for selection or hover states, or keep it as the sprite’s look; it has the same size as the original plus the outline.
Frequently asked questions
How does it add the outline?
It dilates the opaque pixels of your transparent sprite by the chosen thickness and fills the border with your outline color.
Does it need a transparent image?
Yes — a PNG with transparency works best so the outline can wrap the sprite silhouette.
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