WFS Viewer Online

The WFS Viewer Online enables testing and data retrieval from Web Feature Service endpoints. It solves the problem of discovering available feature types, validating endpoint capabilities, and fetching features for client apps or analyses. Conceptually, the tool constructs GetFeature requests, negotiates response formats (GeoJSON or GML), and returns a structured feature collection for downstream use. It supports both simple and advanced queries, including bbox filtering, property selections, and optional server-side filters. Beneficiaries include GIS developers building map clients, data scientists extracting spatial data, and analysts validating datasets before integration. The core value lies in reducing guesswork when connecting to remote geospatial services and in providing consistent, machine-readable outputs for automated pipelines. Key features include capability parsing, multi-type queries, support for GET and POST methods, and straightforward error reporting. Users can test endpoints, compare responses across layers, and iterate on filters to obtain precise subsets. The tool emphasizes standards compliance (OGC WFS 1.x/2.x) and interoperability with common geospatial formats, such as GeoJSON and GML, without performing server-side edits or reprojection.