GeoJSON Feature Simplifier

Simplify GeoJSON features to reduce file size and complexity. Uses the Ramer-Douglas-Peucker algorithm to remove redundant coordinates while preserving shape.

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1. Prepare & Validate GeometryStep 01

Closed Path Checker

Laser & CNC Audit

Detect open loops, self-intersections & duplicate nodes before cutting.

SVG to DXF (Scale Preserved)

1:1 Precision

Convert SVG to DXF with guaranteed real-world 1:1 millimetre scale.

2. CAD & Vector File ConversionStep 02

SVG to DXF Converter

Industry Standard

AutoCAD R12/R14 DXF export for LightBurn, Fusion 360 & CAD.

DXF to SVG Converter

Vector Export

Convert engineering DXF drawings back to clean web-ready SVG vectors.

SVG to GeoJSON (GIS)

GIS Mapping

Convert vector boundaries and polygons to GeoJSON & KML for QGIS and web mapping.

3. Machine Toolpath & G-CodeStep 03

SVG to G-Code Generator

#1 Maker Tool

Generate clean GRBL G-code toolpaths directly from SVG files for laser & routers.

Image to G-Code (Laser)

Photo Engraving

Raster photo engraving with M4 dynamic power & Floyd-Steinberg dithering.

G-Code Viewer & Simulator

Dry Run Simulator

Interactive 2D/3D cut simulation, time estimate, and workpiece bounds check.

DXF to G-Code Generator

2D CAM Milling

CAM toolpath generation for Mach3, LinuxCNC, and multi-pass CNC routing.

CNC Feed Rate Calculator

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Calculate optimal spindle RPM, feed speed, and chip load per tooth.

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How to Use

Upload GeoJSON

Upload or paste your GeoJSON data.

Set tolerance

Adjust the simplification tolerance (in degrees). Higher = simpler but less accurate.

Download simplified GeoJSON

Download the simplified GeoJSON with reduced coordinate count.

Why GeoJSON Simplification Matters

High-resolution geographic data can contain thousands of coordinate points per feature — far more than is visually distinguishable at typical map zoom levels. Sending this raw data to a web browser causes slow load times and poor map performance. Simplification reduces the coordinate count while preserving the recognisable shape of geographic features.

Real-World Examples & Use Cases

Web Map Performance

Simplify a country boundary GeoJSON from 5MB to 50KB for fast web map loading.

Frequently Asked Questions

What is the Ramer-Douglas-Peucker algorithm?▼

The RDP algorithm reduces the number of points in a curve by removing points that are within a specified distance tolerance of the straight line between neighbouring points. It is the standard algorithm for line simplification in cartography.

How much can I simplify?▼

For web display at national scale, simplification to 0.01° tolerance can reduce file size by 90%+ while remaining visually indistinguishable. For detailed local maps, use 0.0001° or smaller.

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