GIS Shape Validator
Validate GeoJSON, KML, and Shapefile geometry for topological correctness. Detects self-intersections, invalid rings, and other geometry errors.
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.
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 GIS file
Upload a GeoJSON, KML, or Shapefile (ZIP).
Run validation
The tool checks for geometry errors: self-intersections, invalid rings, coordinate out-of-range.
Review report
Download a detailed validation report with error locations.
GIS Geometry Validation
Invalid geometry is a common problem in GIS workflows. Self-intersecting polygons, unclosed rings, and coordinate errors cause processing failures in PostGIS, ArcGIS, QGIS, and web mapping APIs. This validator checks your GIS files for these issues before they cause problems downstream.
Real-World Examples & Use Cases
Pre-processing Validation
Validate GeoJSON data before uploading to PostGIS or running GIS analysis.
Frequently Asked Questions
What causes self-intersecting polygons?▼
Why does GIS software reject invalid geometry?▼
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GIS Shape Validator
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