βοΈ Image to SVG Tracer
Vectorize high-contrast images into scalable SVG paths.
How to Vectorize an Image
Upload a high-contrast image, adjust the threshold until the foreground separates cleanly, set detail for fidelity versus file size, and trace. The preview shows your vector result; download the SVG for use in design software, on the web, or with cutters and engravers.
Upload a logo, icon, or line-art image. Bold black-on-white works best.
Move the threshold slider until edges look clean in the preview.
Set detail: higher for faithful curves, lower for cleaner small files.
Pick a trace color and background, then download the SVG.
How Contour Tracing Works
Vectorization turns pixels into geometry. First the image is reduced to grayscale and binarized at your threshold: every pixel becomes foreground or background. Then the marching squares algorithm scans each 2 by 2 block of pixels and, based on which corners are foreground, draws the short line segments that separate dark from light: sixteen possible corner patterns cover every case, including the ambiguous saddle patterns resolved by sampling the block center. These thousands of tiny segments are then joined end to end into continuous contour loops, and each loop is simplified with the Douglas-Peucker algorithm, which drops points that do not change the shape beyond a small tolerance. The surviving points become SVG path data. Because the output is mathematics rather than pixels, it scales from favicon to billboard without any quality loss, which is the entire point of vector graphics. The tradeoff is fidelity: smooth gradients and photographic texture cannot be represented by flat contours, which is why this technique belongs to logos and line art.
Using Your Traced SVG
Open the SVG in Illustrator, Inkscape, or Figma for further editing: paths are standard and fully editable. On the web, inline the SVG or reference it in an img tag for crisp rendering at any size and tiny file weight compared to PNGs. Vinyl cutters and laser engravers accept single-color traced paths directly, making this a quick route from sketch to physical product. If edges look jagged, raise detail; if the file is enormous or speckled, lower detail and nudge the threshold. For multi-color logos, trace each color as a separate pass and combine the SVGs in an editor.
Frequently Asked Questions
How does the SVG tracer work?
The tool converts your image to grayscale, applies your threshold to separate foreground from background, then runs marching squares: an algorithm that walks the pixel grid and traces the exact contours where dark meets light. Contours are simplified into smooth polygons and written as SVG path elements, producing a true resolution-independent vector file.
What kinds of images trace well?
High-contrast graphics trace best: logos, icons, line art, silhouettes, and text. Photos produce complex, blobby paths that are technically valid SVG but huge and not very useful. For clean results, start with bold black-on-white artwork and tune the threshold until edges look right in the preview.
What do threshold and detail control?
Threshold sets the brightness cutoff between foreground and background: lower values keep only the darkest pixels, higher values include more gray tones. Detail sets the tracing resolution: higher detail follows edges more faithfully but creates larger files, while lower detail simplifies shapes into cleaner, chunkier paths.
Why is my SVG file so large?
Tracing converts every wiggle of every contour into path coordinates, so noisy or photographic sources generate thousands of points. Reduce detail, raise the threshold to drop speckles, or start from cleaner artwork. For web icons, a 128-pixel trace of a simple logo is usually under 50 KB.
Can I trace in color?
This tracer produces single-color silhouettes, which is ideal for logos, vinyl cutting, and laser engraving. The foreground color is customizable. For multi-color vectorization you would need layered tracing, which is beyond a free in-browser tool: instead, trace each color region separately by adjusting threshold on pre-separated artwork.
Are my images uploaded anywhere?
No. Grayscale conversion, thresholding, and contour tracing all run in your browser via JavaScript and Canvas. Files never leave your device, and tracing completes in seconds for typical logo artwork. Complex illustrations may take a little longer depending on your device.