Geofence Validator

Polyline Converter

Polyline encoding is a compact way to represent routes in mapping applications.

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About Polyline Converter

This tool decodes encoded polyline strings to GeoJSON format and visualizes them on a map.

OSRM URL Support

You can paste an OSRM API URL to extract and decode the polyline.

https://mapbox-osrm-proxy.example.com/tdroute/v1/[routing_profile]/[coordinates]?parameters

For routes with multiple waypoints, you can select individual segments to visualize separately.

What are Polylines?

Polylines are encoded strings that represent a series of geographic coordinates, commonly used in mapping applications to efficiently store and transmit route data.

Precision Options

  • Precision 5: Default for Google Maps
  • Precision 6: Higher accuracy (used for some GIS applications)

Welcome to Polyline Converter

Enter an encoded polyline string to decode and visualize it on a map. You can also download the result as GeoJSON.

Enter Polyline

Visualize

Download