Monochrome Bitmap to SVG Tracer
Monochrome Bitmap to SVG Tracer: Applies Potrace vectorization algorithm, detecting high-contrast contours and fitting cubic Bézier spline curves.
About this monochrome bitmap to svg tracer
Trace high-contrast bitmap pixels into compact monochrome SVG paths in the browser.
How this tool works
Samples the decoded bitmap to at most a 256-pixel trace grid, marks pixels darker than a fixed luminance and alpha threshold, and emits horizontal one-pixel SVG path runs. It does not fit curves or implement Potrace.
- XML DOM & Path Parsing: Parses SVG text into an XML DOM tree, extracting viewBox, path elements, and styling attributes.
- Vector Coordinate Optimization: Truncates excessive floating-point decimals in path coordinates (e.g. from 8 decimals to 2 decimals).
- Metadata & Node Pruning: Removes unnecessary XML headers, DOCTYPE declarations, editor metadata, and collapsed empty container tags.
- Rasterization & Data URI Encoding: Renders vector curves to high-DPI canvas buffers or encodes clean SVGs to base64 Data URIs.
Worked example
Scenario: Trace a 12×9 four-color bitmap with the disclosed monochrome rule.
Sample input:
Processing: Canvas samples the image and emits horizontal dark-pixel SVG path runs.
Illustrative output:
Limits and verification
Ensures coordinate rounding precision does not deform complex curves or tiny vector icons (minimum 1-2 decimal places recommended). Sanitizes embedded script tags (<script>) to prevent Cross-Site Scripting (XSS) in untrusted SVG inputs.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Enter, paste, or select your input data into the Monochrome Bitmap to SVG Tracer workspace controls.
- Review available parameter fields, units, formats, or options configured for your task.
- Click the action button or observe immediate live calculations rendered in your browser runtime.
- Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.
Frequently asked questions
How does bitmap to SVG tracing work?+
It samples the decoded image to at most 256 pixels on its longest side, marks pixels dark when alpha exceeds 32 and Rec.709 luminance is below 128, then writes one-pixel-high horizontal SVG path runs.
Which controls and limits are actually available?+
There is one image picker and Local processing only. No threshold control, color tracing, curve fitting, smoothing, path editor, palette, resize control, batch mode, or Potrace engine is provided.
What did the isolated browser fixture verify?+
The decoded bitmap is downsampled so its longer trace-grid side is at most 256 pixels. Pixels with alpha above 32 and fixed luminance below 128 become black horizontal one-pixel rectangle paths; the SVG keeps the original width and height but uses the sampled grid as its viewBox. This is threshold run tracing, not contour detection, curve fitting, color vectorization, anti-alias preservation, OCR, or Potrace.
Which input condition matters most?+
The image must decode in the browser. This is monochrome threshold run tracing for high-contrast logos or line art, not faithful color vectorization or curve fitting.