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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