Simplify Reduce Points

The tool uses the Ramer-Douglas-Peucker algorithm as implemented in Turf.js. This is the standard algorithm for polyline simplification, preserving key vertices while removing redundant intermediate points.

Tolerance defines the maximum distance a simplified point can deviate from the original line, in degrees. A small tolerance (0.0001) preserves more detail; a large tolerance (0.01+) simplifies aggressively.

High-resolution geometry can often be simplified by 70–90% with barely perceptible visual change at typical web map zoom levels.

Basic simplification may introduce small gaps or overlaps at shared boundaries between adjacent features. For topology-preserving simplification, QGIS's simplify operation with topology preservation is more appropriate.

No. All simplification is done client-side using Turf.js in your browser.