bbecquet/leaflet.polylineoffset

This plugin extends Leaflet's `Polyline` class to allow drawing lines with a relative pixel offset, enabling visual effects like parallel lines or styled features without altering the original coordinates. It's ideal for developers creating complex map visualizations, such as cycle lanes, bus routes, or emphasized linear features, using Leaflet for interactive mapping. The offset remains consistent across zoom levels and supports both left and right offsets.