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GISBound

GISBound is a fast and reliable tool for engineers and GIS users who need to turn “messy” CAD drawings into clean, GIS-ready data.  While the built-in boundary command often has trouble with large object set and  small precision issues,  GISBound can handle these much better thanks to its custom multi-threaded engine.

Built for both speed and accuracy, GISBound can process tens of thousands of objects—like Lines, Arcs, Polylines, SpLines... —and convert them into properly closed 2D Polylines. It can keeps very high precision (up to 10⁻⁸), even when working with large projected coordinate values (up to 10⁶).

Key features

• Multi-core processing: Uses Parallel processing to take full advantage of your modern CPU cores. You can process 30,000+ objects and create 12,000+ boundaries in just minutes.

• High precision (upto 10⁻⁸): Unlike the classic JOIN command that may slightly move points, and the classic _BO command that may miss small corner, GISBound keeps coordinates exactly as they are.

• Handles large coordinates: Works well even with very large values (millions), without losing accuracy—great for big survey or infrastructure projects.

• Smart geometry pre-processing:  3D objects are flattened to 2D, curve objects are segmented automatically with adjustable accuracy.

• Smart geometry cleanup:   GISBound is specifically designed to detect and remove overlapping, nested, and duplicated boundaries, as well as self-intersecting ones (e.g., figure-eight loops with opposite signed areas)

• Keeps layer structure: Original layers can be preserved, so your data organization stays intact.

• GIS-ready output: Generates clean, closed POLYGON geometries as CSV or GeoJSON files, ready for direct use in ArcGIS, QGIS, Global Mapper...

Why GISBound ?

Standard CAD commands often crash or hang when dealing with massive datasets. GISBound is built to be "unbreakable," providing a reliable bridge between raw CAD drafts and structured GIS databases. Whether you are working on a 16-year-old Xeon workstation or the latest multi-core beast, GISBound scales to your hardware's full potential.

System requirements

• Windows 64-bit 8.1, 10, 11

• AutoCAD 64-bit 2021 to 2027

Official download link (waiting for approval):  

Beta version 0.0.5: