Using the Map Tile Server Service

Let’s get started with the API. We will take you through some of the functionalities of the API step by step. If your questions aren’t answered on this site, please contact us.

Getting started


First of all, you need to get some credentials. With an API key you will be able to access the related API and if applicable your usage will be automatically tracked and billed. Just click on the “GET YOUR FREE API KEY” button above, to apply for a free trial. Your API key will be between 30 and 128 characters long.








Map Tile Server API



These maps and their tiles are generated from our map database and are delivered on API request to end-users. GeoJunxion uses a combination of methods that makes this service very fast and efficient. The map service comes with on-demand tile rendering rendering, often with smart-tiling, and custom styling. With smart tiling, all populated areas can be pre-rendered to fulfill super-fast response to map requests.


What does a map request look like:

https://<server address>/{z}/{x}/{y}.png?apikey=<key>

Layer projection: EPSG:3857


  • Server address: tile server API address for tile requests.
  • {z} is the zoom level value
  • 0≤{x}<2{z}, 0≤{y}<2{z} is the relative grid position
  • Key: specific unique key provided by GeoJunxion for a particular distribution.

All content including names and geographic data presented are retrieved from the source Openstreetmap (OSM). While working with a versatile open source data set such as OSM, build by a community, one may encounter inconsistencies of data edits. GeoJunxion has put some effort in solving such occasions for the maritime boundaries, however, because it is impossible to continuously monitor and cover all inconsistencies some tiny pieces of maritime bounds may occur.

Slippy Map

The provided map tiles can be used in a modern slippy map web map application which let you zoom and pan around. With a slippy map, basically, the map slips around when you drag the mouse. More info regarding this kind of map, can be found here: How are slippy map tiles converted back and forth from/to coordinates? The answer, in many programming languages, can be found here:


The following citations have to be included in your map service for OSM, GeoJunxion Digital Map:

Contains data from © OpenStreetMap contributors. In case of map tiles, cartography is licensed as CC BY -SA (see

Contains data from © GeoJunxion.


When using Leaflet (Leaflet is the leading open-source JavaScript library for mobile-friendly interactive maps:, you might use the following code:

attribution="Map data &copy; <a href=''>OpenStreetMap</a> contributors | &copy; <a href=''>GeoJunxion</a>"


GeoJunxion OSM Pro Tile Server Solution Summary

Standard set up 

    • Offers the same mapping experience as the free OSM Tile Service
    • Includes satellite tile images for the Netherlands and Flanders
    • Provides the option to use GeoJunxion proprietary digital map
    • Includes several map styling solutions including fast display
    • Very fast display of maps tiles
    • Flat monthly fee includes up to 1 TByte of bandwidth usage
    • Data is updated at least twice a year further to GeoJunxion quality test assurance


    • Visualization of GeoJunxion proprietary map data
    • Customizable style and layers
    • On premise installation
    • GeoJunxion can provide example code to implement on Leaflet technology

Pre-requisite to implement the GeoJunxion OSM Pro Tile Solution

    • The application must support Slippy Map Tiles URLs


GeoJunxion OSM TileServer implementation examples

OSM Default Style:

OSM Bright Style with and without house numbers:

GeoJunxion Proprietary Digital Maps

Satellite Imagery


 Technical information about GeoJunxion OSM Pro Tile Service

  • Coverage: Same as OSM, current status based on OSM data from August 2019
  • Minimum typical server performance 1,800 tiles per minute
  • Dedicated GeoJunxion server with high availability
  • Data runs on AWS server in Europe (Ireland), managed by GeoJunxion IT

Setup process

  • After you sign the contract, you should receive an email with the specific URL within 3 working days for standard service.

Why is it faster than OSM free service?

  • Dedicated server for tile service only
  • Specific GeoJunxion optimization for tile creation and data retrieval
  • Smart Tile process, specific selection of pre-tiled areas to increase speed
  • No limit on number of tiles and bandwidth
  • Tile server service runs on Cloud architecture

What technology is used by GeoJunxion?

  • GeoJunxion developed in-house software for specific performance and service improvements.