Geovara — Free Online GeoJSON Editor & Map Drawing Tool

Professional Geospatial Data Editing Platform

Geovara is a free, browser-based GeoJSON editor designed for professional GIS workflows. Draw points, lines, polygons, rectangles, and circles on an interactive map powered by OpenLayers. Edit feature properties, validate GeoJSON structure, and export your data — all without signup or installation.

Interactive Map Drawing Tools

Create geographic features directly on the map with precision drawing tools. Geovara supports Point, LineString, Polygon, Rectangle, and Circle geometries. Edit existing features with drag-and-drop vertex manipulation. Delete individual features or clear the entire canvas. Every action supports undo and redo for a professional editing experience.

AI-Powered Spatial Analysis

Geovara includes an AI spatial assistant that understands natural language commands. Ask it to fly to a location, change the basemap, or perform buffer analysis on selected features. Powered by Google Gemini AI, the assistant provides intelligent geospatial operations without requiring GIS expertise.

Real-time GeoJSON Editor

View and edit raw GeoJSON code in a professional Monaco editor with syntax highlighting. Changes sync bidirectionally between the code editor and the map in real-time. Import GeoJSON, TopoJSON, or KML files by drag-and-drop. Export your work as GeoJSON or TopoJSON format.

Spatial Analysis & Measurement

Perform advanced spatial operations including buffer analysis, centroid calculation, and intersection detection powered by Turf.js. Measure distances and areas in real-time with professional measurement tools. Results are displayed in metric units (meters, kilometers, square meters, square kilometers).

CRS Projection Support

Switch between WGS 84 (EPSG:4326) and Web Mercator (EPSG:3857) coordinate reference systems. Geovara handles projection transformation automatically, ensuring your geospatial data maintains accuracy across different coordinate systems used in web mapping and GIS applications.

3D Globe Visualization

Toggle between 2D map view and an immersive 3D globe powered by CesiumJS and OL-Cesium. Visualize your geographic data in a three-dimensional context with terrain elevation, satellite imagery, and smooth globe navigation.

Shareable Stateless Architecture

Geovara uses a unique URL-driven architecture where your entire workspace — including all GeoJSON features — is compressed using LZW algorithms and stored in the URL hash. Share complex map workspaces with a single link. No account, no server storage, no database required.

High-Performance Processing

Large GeoJSON datasets (over 5MB) are processed in dedicated Web Workers to maintain 60fps UI responsiveness. VectorImageLayer optimization uses rasterization caching for dense geometry datasets, significantly reducing GPU and CPU overhead during map interactions.

Frequently Asked Questions

What is a GeoJSON editor?

A GeoJSON editor is a tool that allows you to create, view, edit, and validate GeoJSON data — the standard format (RFC 7946) for encoding geographic data structures. Geovara is a free online GeoJSON editor that provides both visual map-based editing and raw code editing with real-time synchronization.

How do I draw polygons on a map online?

Open Geovara in your browser and select the Polygon tool from the drawing toolbar. Click on the map to place vertices of your polygon. Double-click to finish drawing. Your polygon is automatically converted to GeoJSON format that you can copy, export, or share via URL.

Can I convert GeoJSON to TopoJSON?

Yes, Geovara supports exporting your map data as TopoJSON format. TopoJSON is an extension of GeoJSON that encodes topology, resulting in smaller file sizes while preserving the spatial relationships between features.

Is Geovara an alternative to geojson.io?

Yes, Geovara is a modern alternative to geojson.io with additional professional features including AI-powered spatial analysis, buffer operations, 3D globe visualization, measurement tools, and advanced CRS projection support. Like geojson.io, Geovara is free and requires no signup.

What file formats does Geovara support?

Geovara supports importing and exporting GeoJSON and TopoJSON formats. You can drag and drop GeoJSON or TopoJSON files directly onto the map to import geographic data. The platform validates all imported data using Zod schemas to ensure structural integrity.

Technical Specifications