Proj4 Packages

Reproject GeoJSON. Works Offline.

Re-project a line.

Projection Data Compressed to Fit in the Browser. Includes PROJ4 Strings, ESRI WKT, and OGC WKT

Reproject a geojson with proj4js

Turbo-charge your Re-projection Functions

Collect and Merge all Available Proj4 Instances

Find the geographic projection which best turns a given (X,Y) into an expected (lng, lat).

Simple, Modern Geospatial Bounding Boxes

A library that converts GeoTIFFs geokeys to Proj4 string

Read Pixel Values from a GeoTIFF within a Bounding Box in almost any Projection

Convert GeoJSON to GeoJSON (from obsolete specification (aka GJ2008) and back)

Super Low-Level Raster Reprojection and Resampling Library