How to Prepare an Image for a CNC Router
CNC routers require vector file inputs — DXF or SVG. CNC routers (Shapeoko, X-Carve, Onefinity, Avid CNC) require vector file inputs — DXF, SVG, or the native format of the CAM software.
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No account is required to create or view the protected preview. The preview accepts one PNG, JPEG, or WebP file up to 4 MiB; other source formats must be exported or converted to one of those formats first. Editable SVG export requires paid or complimentary access. Review the exported SVG in the appropriate downstream software; non-SVG formats and machine instructions require separate conversion.
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CNC routers (Shapeoko, X-Carve, Onefinity, Avid CNC) require vector file inputs — DXF, SVG, or the native format of the CAM software. Here is the full workflow for preparing any image for a CNC router.
Step 1 — Vectorize the image: upload the PNG, JPG, or scanned image to the vectorizer.
Step 2 — Clean up the SVG: open the SVG in Inkscape. Remove interior fill regions if you only need the outer contour. Use Path > Simplify (Ctrl+L) to reduce node count — this produces smoother toolpaths in the CAM software. Node density between 20–50 nodes per inch of path length is ideal for CNC routing.
Step 3 — Export to DXF: go to File > Save As > DXF R14 in Inkscape. DXF is the most universally accepted format for CNC CAM software including Vectric VCarve, Carbide Create, Fusion 360 CAM, and Mastercam.
Step 4 — Import into CAM software: import the DXF into your CAM software. Define the toolpath type: pocket, contour, drill, or engrave. Assign tool diameter, depth of cut, stepover, and feed rate. Generate G-code for the CNC controller.
Common issues: open paths produce incomplete toolpaths — ensure all paths are closed before DXF export. Overlapping paths can cause double-cut toolpath errors — remove duplicate geometry in Inkscape before exporting.