Overview
Introduction
This tool adds a solid-color outline that hugs a logo's exact shape, the classic sticker-border look, entirely in your browser.
It's a fast way to give a flat logo more visual pop or make it stand out against a busy or similarly-colored background.
What Is Logo Outline Adder?
A client-side outline generator that finds every pixel within a chosen thickness of the logo's existing opaque silhouette and fills those pixels with a solid outline color.
The canvas expands by the outline thickness on all sides so the new outline ring is never clipped.
How Logo Outline Adder Works
For every pixel in the larger output canvas, the tool checks whether it falls within a circular search radius (equal to the requested thickness) of any originally-opaque source pixel; if so, and the pixel itself isn't already part of the logo, it's filled with the outline color.
Pixels that were already opaque in the source are copied through unchanged, so the original logo sits on top of its own outline.
When To Use Logo Outline Adder
Use it to make a logo readable over a busy photo background, like a sticker or badge treatment.
It's also useful for giving a thin-lined logo more visual weight without redesigning the artwork itself.
Often used alongside Logo Space Adder, Logo Shadow Adder and Logo Centerer.
Features
Advantages
- Runs entirely client-side; your logo file is never uploaded anywhere.
- Traces the logo's actual shape rather than drawing a generic rectangular frame.
- Outline color, alpha, and thickness are all fully configurable.
Limitations
- Relies entirely on the logo's existing alpha channel; a logo without real transparency will get an outline around its entire rectangular canvas instead of its visual shape.
- Very thick outlines on a large logo can push the output past the 4096px maximum canvas dimension.
Examples
Best Practices & Notes
Best Practices
- Use a thickness proportional to the logo's own detail level — very thin artwork can get visually overwhelmed by a thick outline.
- Preview against your actual target background before finalizing the outline color.
Developer Notes
The lib function is a thin re-export of the already-shipped addOutlineToPng (itself a wrapper over the stroke-adder's shape-hugging border math), since a logo is just a PNG once it's uploaded — no new pixel math was needed here.
Logo Outline Adder Use Cases
- Making a logo pop over a busy photo hero background
- Creating a die-cut sticker version of a brand mark
- Improving contrast for a light logo placed on a light background
Common Mistakes
- Using a source logo without real transparency and getting a rectangular outline instead of a shape-hugging one.
- Choosing an outline thickness so large the output exceeds the 4096px maximum canvas size.
Tips
- Combine with the shadow adder for a layered sticker-and-shadow effect.
- Use a low-alpha outline color for a subtle contrast edge instead of a bold sticker border.