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  3. /What is a GIS viewer?

What is a GIS viewer?

What a GIS viewer is, how it relates to desktop GIS, what data belongs in it, and how GeoApps Viewer fills that role for governments and firms.

A GIS viewer is not just a textbook term: it is the map your organisation actually opens. Below: what that means, how it relates to desktop GIS, what data belongs in it, and how GeoApps Viewer fills that role.

Definition: the map everyone opens

A GIS viewer is a web app for map layers and spatial data: view, query, analyse and share. Colleagues click the map, toggle layers and send a link. Nobody installs desktop GIS. GeoApps Viewer is that viewer for governments, city departments and consulting and engineering firms.

Viewer versus desktop GIS

QGIS and ArcGIS Pro stay with specialists: heavy analysis, data models, cartography. The GIS viewer is the publishing layer. GeoApps Viewer does not replace desktop GIS; it makes the same maps available to everyone else — in the browser, with user management.

What data goes in

A serious GIS viewer connects PDOK and your own sources in one map: WMS, WMTS, WFS, GeoJSON, Shapefile, GeoPackage, plus extras such as Cyclomedia StreetSmart or 3D. The free PDOK Viewer is fine for public data only; own layers, drawing, reporting and permissions need a platform like GeoApps.

Who uses a GIS viewer

Policymakers, project teams, inspectors and communications open the viewer daily. GIS specialists build and publish. Governments, city departments and consulting and engineering firms use the same setup: one browser, no extra desktop licence per viewer.

Related in the lexiconMore in the knowledge baseWhat is GIS?

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