# Map Matching

You can snap measured GPS points typically as GPX files to a digital
road network to e.g. clean data or attach certain data like elevation or turn instructions to it.

See the [clients](#section/API-Clients) section in the main documentation, and [our API explorer](https://explorer.graphhopper.com/?endpoint=match).

The cost for one request depends on the number of GPS location and is documented [here](https://support.graphhopper.com/support/solutions/articles/44000718211-what-is-one-credit-).

One request should not exceed the Map Matching API location limit depending on the package, see the pricing in our dashboard.


## Map-match a GPX file

 - [POST /match](https://docs.graphhopper.com/openapi/map-matching/postgpx.md): To get a match response you send a GPX file in the body of an HTTP POST request and specify request parameters like the  and  in the URL.
See below for more supported parameters.