Potrace vs imagetosvg.com  Vectorizer Algorithm Compared
Potrace is the classic open-source vectorizer. imagetosvg.com uses VTracer  a modern color-capable vectorizer. See which algorithm produces better SVG output.
Potrace  The Classic Vectorizer
Potrace (used in Inkscape's Trace Bitmap) was built for B&W bitmap tracing. It's excellent for logos, line art, and simple icons with one or two colors. It converts each connected black region to a smooth SVG path.
- Algorithm: designed for B&W bitmaps
- Best for: line art, single-color logos, clipart
- Color support: limited (requires multiple passes per color)
- Path quality: very smooth curves, accurate to original
- Used by: Inkscape, Vectorizer.io, many online tools
VTracer (imagetosvg.com)  Modern Color Vectorizer
VTracer was built for color images. It clusters pixels by color, then traces the boundary of each color region as a vector path. Handles multi-color images in one pass without multiple color scan iterations.
- Algorithm: color clustering + boundary tracing
- Best for: multi-color logos, illustrations, photos
- Color support: full color in one pass
- Path quality: slightly more nodes than Potrace, but handles color
- Used by: imagetosvg.com, vtracer CLI tool
Frequently Asked Questions
Is Potrace or VTracer better for B&W logos?
Potrace produces slightly smoother paths for B&W images. VTracer's B&W mode is comparable and faster for quick conversions.
Which vectorizer handles color images better?
VTracer (imagetosvg.com) handles multi-color images in a single pass. Potrace requires multiple separate trace operations per color.
Is VTracer open source?
Yes  VTracer is open source (MIT license) on GitHub. imagetosvg.com uses an enhanced version of the VTracer algorithm.
What SVG quality differences can I expect between the two?
For simple B&W: similar quality. For complex color images: VTracer is significantly better. Potrace creates cleaner individual paths but doesn't handle color natively.
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