PROJ powered by WebAssembly
Welcome to Wasm PROJ. This library and collection of utilities brings
PROJ
into your web browser. Because it runs entirely client-side via WebAssembly, your data never leaves your
machine, ensuring complete privacy and fast performance without the need for a backend server.
When needed the page may request portions of grid files hosted in
PROJ's CDN.
PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic projections as well as geodetic transformations.
CRS Transform
Transform coordinates between different Coordinate Reference Systems (CRS). Easily search through the EPSG or ESRI catalogs, or define a custom system using free text as WKT, PROJJSON or even a proj4 string.
Open CRS TransformPipeline Transform
PROJ allows to define a transformation as a
pipeline.
If you know your pipeline, run that transformation for a buch of coordinates. It is kind of similar to
cct
application.
projinfo
Run the projinfo command-line application in your browser. Query the PROJ database for CRS information, view detailed WKT and PROJ string definitions, and deeply inspect coordinate operations and pipeline parameters.
Open projinfo