Free Online Map Viewer & Geospatial Data Visualizer

DudeMap is a fast and modern online map viewer. Upload geospatial files — GeoJSON, Shapefile, FlatGeobuf, KML, GPX, CSV — and view them instantly on an interactive map. No installation. No signup. Just upload and explore.

Supported Map & Geospatial Formats

• GeoJSON (.geojson)
• Shapefile (.shp inside .zip)
• FlatGeobuf (.fgb)
• KML / KMZ
• GPX
• CSV (lat/lng)
• WKT / WKB (coming soon)

Features

• Instant rendering of polygons, lines, and points
• Interactive base maps powered by MapLibre & deck.gl
• Attribute table viewer (coming soon)
• Spatial tools: buffer, nearest point, measure distance
• Coordinate conversion (EPSG:3857 ↔ EPSG:4326)
• Export processed data to GeoJSON

Why People Use DudeMap

Simple for beginners. Powerful for pros. A clean, fast, web-based map viewer you can access from any device.

Open the Interactive Map Viewer

Want to explore maps interactively? Go to the Interactive Map Viewer

Explore Your Data in 3D & Find Any Place Instantly

DudeMap offers an advanced three-dimensional map experience where you can tilt, rotate, and navigate through cities rendered with extruded structures and terrain-style visuals. Whether you're examining detailed GeoJSON layers in 3D or browsing Shapefiles, FlatGeobuf, or other geospatial formats, the MapLibre rendering engine provides smooth and realistic interaction.

For even richer visualization, DudeMap integrates Deck.gl, enabling high-performance, GPU-accelerated rendering of massive geospatial datasets. This makes it possible to visualize millions of points, heatmaps, 3D arcs, and advanced layers with exceptional clarity and speed.

The platform also includes a powerful global place search tool. Enter any address, landmark, or coordinate, and the map instantly zooms and orients itself to that location. This makes it easy to connect your uploaded datasets with real-world places for planning, research, and mapping workflows.

Highlights of the 3D GeoJSON Viewer, Deck.gl & Search Tools

• Search cities, addresses, and landmarks using the built-in geocoding engine
• Render polygons, lines, and points in a fully interactive 3D scene
• Visualize millions of features using Deck.gl's GPU-powered layers
• Create advanced effects like heatmaps, cluster maps, 3D arcs, and path layers
• Overlay search results on top of your GeoJSON, Shapefile, FGB, KML, GPX, or CSV data
• Move through the map with fluid tilt, pitch, and rotation controls
• Use DudeMap as a 3D GIS viewer directly in the browser—no installation needed
• Instantly focus the map on searched locations, coordinates, or dataset features

DudeMap brings together 3D geospatial visualization, Deck.gl high-performance rendering, and instant global search, creating a versatile online mapping environment suitable for urban studies, GIS analysis, field planning, environmental work, and interactive map exploration.

Featured Map Datasets

Points of Interest (POI) Dataset - Washington, D.C., USA

Explore and visualize key locations in DC in 3D on interactive maps. Contains address alias points including Schools, Hospitals, Monuments, and more.

This dataset provides geocoded locations and attributes of address alias points, created as part of the Master Address Repository (MAR) for the Office of the Chief Technology Officer (OCTO) and participating DC government agencies. You can visualize your data in 3D to see Schools, Federal Buildings, Military Installations, Hospitals, Museums, Monuments, University Structures, Fire and Police Stations, Libraries, Metro Facilities, Historical Landmarks, Recreation Centers, Mile Markers, and Marinas.

• Schools
• Federal Buildings
• Military Installations
• Hospitals
• Museums
• Monuments
• University Structures
• Fire and Police Stations
• Libraries
• Metro Facilities
• Historical Landmarks
• Recreation Centers
• Mile Markers
• Marinas

Visualize in 3D: Import this GeoJSON into your interactive 3D mapping application (MapLibre GL, Mapbox, or Cesium) for immersive spatial analysis and urban planning.

More information: opendata.dc.gov | Data dictionary: here. MAR 2 uses PLACE_NAMES_PT with additional info like created/edited dates.

Dataset provided by the DC Office of the Chief Technology Officer (OCTO), available via opendata.dc.gov. Licensed under CC BY 4.0.

EV Charging Points - Dún Laoghaire-Rathdown County, Ireland

Explore and visualize Electric Vehicle (EV) charging points in DLR County in 3D on interactive maps. Includes geospatial coordinates and key attributes for each charging station.

This dataset provides locations of EV charging points across Dún Laoghaire-Rathdown (DLR) County. Data was collected by Compass in a 2019 survey and may not include newly installed points. Some charging stations may be on private property or restricted to certain customers.

Use Cases: 3D GIS visualization, interactive mapping, EV infrastructure planning, urban planning, and public awareness of charging locations.

Visualize in 3D: Import this GeoJSON into MapLibre GL, Mapbox, Cesium, or other 3D mapping platforms to see EV charging points in context and perform spatial analysis.

More information: DLR County EV Charging Points

Dataset Attribution: Published by Dún Laoghaire-Rathdown County Council. Original dataset available at data.smartdublin.ie and listed on data.europa.eu . Created: 13 May 2025 | Updated: 26 May 2025.