Converting Raster Artwork to Vector for Laser Cutting

Why Vector Matters for Laser Cutting

When you send a JPG or PNG to a laser as a cut path, the software has to guess where the edges are from a blurry grid of pixels. The result is a jagged or over-burnt path with poor edge quality. A vector file contains exact mathematical paths — the laser follows them perfectly with no guessing.

Raster (JPG/PNG): grid of colored pixels — good for engraving photos Vector (SVG/DXF/AI): mathematical curves and lines — required for precision cutting

Any artwork you want to cut rather than engrave needs to be vector. This guide shows how to convert in five popular tools.

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LightBurn (Easiest for Laser Users)

LightBurn has a built-in trace tool that works directly with imported images.

1. Import your JPG/PNG: File → Import
2. Select the image on the canvas
3. Open Trace: Tools → Trace Image (or click the Trace button in the toolbar)
4. Threshold slider — controls which pixel brightness becomes a cut line. Move right to trace finer detail, left to simplify
5. Smooth — reduces the number of nodes in curves (higher = smoother but less accurate)
6. Optimize — merges very close or parallel lines (use for clean output)
7. Click OK — LightBurn creates vector paths on top of your image
8. Delete the original image — leave only the vector paths
9. Assign the paths to a cut layer (red) vs engrave layer (filled)

Best for: Simple logos, silhouettes, clipart. Not ideal for complex multi-color artwork.

Tip: Set threshold to where your design is fully closed — no gaps in the outline. A gap in the vector becomes a gap in your cut.

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Inkscape (Best Free Option — Full Control)

Inkscape is a professional vector editor with powerful tracing. Free and open source.

1. File → Import your image
2. Select the image
3. Path → Trace Bitmap (Shift+Alt+B)
4. Choose your mode:
5. Brightness Cutoff — traces based on light/dark threshold. Best for high-contrast logos and line art. Move the slider until preview looks right.
6. Edge Detection — finds the edges between areas. Good for illustrations with defined outlines.
7. Color Quantization — traces multiple colors separately. Useful for multi-layer designs.
8. Click OK — a vector path is generated on top of the image
9. Move the vector off the image to see it clearly
10. Delete the original image
11. Path → Simplify (Ctrl+L) to reduce excess nodes while keeping the shape
12. File → Save As → SVG or File → Save as DXF for LightBurn/CAM import

Cleaning up nodes: Select path → Node editor (N key) → select all nodes → Extensions → Modify Path → Flatten Beziers (removes unnecessary complexity).

Tip: For multi-color designs, trace each color separately with Trace Bitmap by temporarily adjusting the image before each trace, then combine layers.

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Adobe Illustrator (Best for Complex Artwork)

Illustrator's Image Trace is the most powerful and gives the most control.

1. File → Place your image
2. Select the image
3. Window → Image Trace to open the panel
4. Choose a Preset as starting point:
5. High Fidelity Photo — maximum detail, many paths (slow to cut)
6. Low Fidelity Photo — simplified shapes
7. 3 Colors / 6 Colors — posterized color separations
8. Shades of Gray — grey values as shapes
9. Black and White Logo — best for cutting silhouettes
10. Sketched Art — for hand-drawn artwork
11. Technical Drawing — for line art and blueprints
12. Adjust Threshold (for B&W) or Colors (for color modes)
13. Paths: controls how closely the vector follows the original — higher = more accurate but more nodes
14. Noise: ignores small details below this pixel count — raise to clean up speckle
15. Click Expand in the control bar — converts live trace to editable paths
16. Object → Ungroup — separates individual shapes
17. File → Export → SVG or Save as AI then re-export

Tip for cutting: After expanding, select all and do Object → Compound Path → Make to combine overlapping shapes. Then use Pathfinder → Unite to merge adjacent shapes into single clean outlines.

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Affinity Designer (Best Value Paid Option)

Affinity Designer has bitmap tracing built into both desktop and iPad versions.

1. Place your image: File → Place
2. Select the image with the pointer tool
3. Layer → Rasterize if needed (some images need this first)
4. From the top menu: Layer → Live Trace (or right-click → Trace Bitmap)
5. The trace panel appears with sliders:
6. Threshold — controls black/white split point
7. Smooth — reduces curve complexity
8. Minimum area — ignores small features below this size (pixels)
9. Corner size — controls how sharp corners are preserved
10. Toggle Preview to see the result in real-time
11. When satisfied click Trace
12. The result is a live trace object — click Expand or double-click to access individual paths
13. File → Export → SVG for laser import

Tip: Affinity Designer lets you trace on the iPad with Apple Pencil to touch up nodes directly — very intuitive for cleanup work.

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CorelDraw (Industry Standard for Sign Shops)

CorelDraw's PowerTRACE is extremely capable, especially for professional sign and cut work.

1. File → Import your image
2. Select the image
3. Bitmaps → Outline Trace → Logo (for most laser cutting work) or:
4. Centerline Trace — traces the center of thin lines (good for pen plotters and line engraving)
5. Outline Trace → Clipart — for clean geometric art
6. Outline Trace → High Quality Image — maximum detail
7. PowerTRACE dialog opens:
8. Detail slider — higher = more faithful to original
9. Smoothing — reduces node count
10. Corner smoothness — controls how sharp corners appear
11. Delete original — removes raster after tracing
12. Color Mode: set to Black and White for cutting paths
13. OK to apply
14. Arrange → Ungroup All to separate paths
15. File → Export → SVG or DXF for laser/CNC import

CorelDraw Advantage: PowerTRACE handles complex multi-color designs better than most tools. The Centerline mode is unique — essential for single-line engraving paths.

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Universal Tips for Clean Vectors

1. Start with a high-resolution image — the tracer can only find what's there
2. Increase source contrast before tracing — pure black on white traces perfectly
3. Reduce colors — posterize or threshold the image before tracing
4. Clean up nodes after tracing — delete stray paths, merge duplicates
5. Check for closed paths — open paths will not cut cleanly (laser misses the start/end connection)
6. Scale correctly — set document units to mm, ensure your design is actual size before export
7. Test with engrave first — before committing to a cut, run the vector as a low-power engrave to verify path placement