Centerline Vectorization for Single-Line Engraving
Single-line SVG and DXF with true centerline tracing
Centerline Vectorization converts logos, lettering, and stroke-based graphics into a single-line vector — one open path running along the center of each stroke. Standard tracing follows both edges of a stroke and returns two offset paths, which a laser then burns twice; thin lines and small text thicken or fill in, and run times grow. Centerline tracing reduces each stroke to its center line, so the machine follows a single pass that matches the original artwork.
The output is a single-line SVG that imports into LightBurn and xTool at true scale, plus a single-line DXF for V-carve lettering and engraving in CAM software. Because the result is an open path with no enclosed area, it is intended for engraving, scoring, and pen plotting rather than cutting. For closed, cut-ready contours use Contour Vectorization; for detailed, tonal photo engraving use Line Graphic Vectorization.
Input - Raster
Logos, lettering, icons, and stroke-based graphics intended for single-line output.
Output - Single-Line
A single-line SVG (one open path per stroke) and a single-line DXF for V-carve, at true scale.
Best for - Professionals
Laser engravers producing single-pass engraving and scoring, single-line fonts, and fine lettering, plus pen-plotter and CNC V-carve users.
Different from - Centerline
Outline tracing returns two offset edges per stroke; centerline tracing returns one path along the stroke's center. Use it where a single, accurate line matters more than filled shapes.
Supported Formats
SVG - Single-Line SVG
One open path per stroke, no layers — imports into LightBurn and xTool at true scale for single-pass engraving and scoring.
DXF - Single-Line DXF
For V-carve lettering and engraving in CNC and CAM software, at true scale.
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How it works
- 1
Add your file
Upload a logo, lettering, or stroke-based graphic to open it in the workspace.
- 2
Set the centerline
Adjust how strokes reduce to a single center path. Each stroke becomes one open line, with no second edge and no layers.
- 3
Export
Download single-line SVG or DXF at true scale for LightBurn, xTool, and CNC V-carve.
Use Cases
Single-line fonts and lettering
Engrave single-line and stick fonts where the machine follows one pass per stroke, keeping fine lettering legible at small sizes.
Single-pass engraving and scoring
Produce score lines and engraved detail in a single pass, without the overlap that doubled paths create.
Pen plotting
Output the single-line geometry that pen plotters and drawing machines require.
V-carve lettering
Export single-line DXF for V-carve text and engraving on CNC routers.
Logos and linework
Reduce logos and stroke-based graphics to a single accurate line for engraving and scoring.
Clean import, no rework
Single-line paths import without the duplicate-vector cleanup that outline traces require.
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What does centerline tracing do?
It reduces each stroke to a single path along its center rather than tracing both edges. The result is one open line per stroke, which a laser or plotter follows in a single pass that matches the original artwork.
When should I use this instead of Contour or Line Graphic Vectorization?
Use Centerline for single-line output — fonts, lettering, scoring, and pen plotting. Use Contour Vectorization for closed, cut-ready contours from logos and graphics, and Line Graphic Vectorization for detailed, tonal photo engraving.
Can I cut parts with the output?
No. A single-line path has no enclosed area to separate a part, so it is intended for engraving, scoring, and plotting. For cutting, use the closed contours from Contour Vectorization.
Does it work with LightBurn, xTool, and pen plotters?
Yes. The single-line SVG imports at true scale without duplicate vectors, and the geometry is what pen plotters and drawing machines expect. A single-line DXF is available for CNC V-carve.
Does it support single-line and stick fonts?
Yes. Centerline tracing suits single-line and stick fonts, keeping fine lettering legible at small sizes where outlined text would thicken or fill in.
What source artwork works best?
Logos, lettering, icons, and other stroke-based graphics with clearly defined lines. High-contrast input with consistent stroke widths produces the most accurate single-line result.
