SVG Closed Path Checker
Check whether all paths in an SVG file are closed. Closed paths are required for laser cutting and CNC routing to produce complete cuts.
Maker & CNC Workflow Suite
Seamlessly move your design from vector artwork to machine-ready G-code. Use our connected suite of free, private fabrication tools.
Detect open loops, self-intersections & duplicate nodes before cutting.
Convert SVG to DXF with guaranteed real-world 1:1 millimetre scale.
AutoCAD R12/R14 DXF export for LightBurn, Fusion 360 & CAD.
Convert engineering DXF drawings back to clean web-ready SVG vectors.
Convert vector boundaries and polygons to GeoJSON & KML for QGIS and web mapping.
Generate clean GRBL G-code toolpaths directly from SVG files for laser & routers.
Raster photo engraving with M4 dynamic power & Floyd-Steinberg dithering.
Interactive 2D/3D cut simulation, time estimate, and workpiece bounds check.
CAM toolpath generation for Mach3, LinuxCNC, and multi-pass CNC routing.
Calculate optimal spindle RPM, feed speed, and chip load per tooth.
How to Use
Upload SVG
Upload the SVG file to check.
View results
Open paths are highlighted in the preview. Closed paths are shown in green.
Fix issues
Download a report or an SVG with open paths marked for correction in your design tool.
Why Closed Paths Are Critical for Laser Cutting
A laser cutter follows the vector paths in your SVG file exactly. If a path is open (the start and end points don't meet), the laser will not complete the cut — you'll end up with a profile that is still attached to the material at the gap point. This checker identifies all open paths so you can fix them before cutting.
Real-World Examples & Use Cases
Laser Cutting Prep
Verify that every cut profile is closed before sending a job to the laser cutter.
Frequently Asked Questions
What causes open paths in SVG?▼
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