Convert DGN to GEOJSON Online - Free & Fast

What is DGN?

DGN (Design) is the native file format of Bentley Systems MicroStation, used for storing CAD drawings and GIS data in infrastructure projects such as roads, bridges, and utilities, supporting 2D and 3D design elements with level-based organization.

What is GEOJSON?

GeoJSON is the standard format for web-based geographic data, encoding points, lines, polygons, and feature collections in JavaScript Object Notation.

When Should You Use DGN vs GEOJSON?

DGN vs GEOJSON: Key Differences

• •DGN uses lossy compression while GEOJSON uses lossless compression — this is the fundamental technical difference between the two formats.
• •The switch from lossy compression to lossless compression means you preserve full quality at the expense of larger file sizes.
• •Alpha channel support: GEOJSON lacks transparency support.
• •DGN files are typically 100KB to 1GB depending on design complexity while GEOJSON files range 1KB to 100MB for large datasets
• •DGN is optimized for civil engineering, infrastructure mapping, transportation gis while GEOJSON is designed for web mapping, geospatial apis, data interchange — choose based on your specific workflow needs

Advantages of DGN

• ✓The lossy nature of DGN means file sizes stay reasonable while handling Civil engineering, infrastructure mapping, transportation GIS efficiently.
• ✓From mobile devices to enterprise servers, DGN is recognized and supported everywhere.
• ✓Storage and bandwidth costs drop significantly when using DGN thanks to its efficient compression.
• ✓DGN is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Advantages of GEOJSON

• ✓GEOJSON compresses data using lossless methods, keeping file sizes manageable for Web mapping, geospatial APIs, data interchange.
• ✓Industry-wide support means GEOJSON files open anywhere — from legacy systems to the latest devices.
• ✓Lossless quality makes GEOJSON the gold standard for archival and master copies.
• ✓From professional software to open-source alternatives, GEOJSON works out of the box.

Common Use Cases for DGN to GEOJSON Conversion

Industry Applications

Best Practices for DGN to GEOJSON Conversion

• →When converting DGN to GEOJSON: confirm the coordinate reference system (CRS / projection) is preserved or explicitly reprojected
• →Keep attribute tables and feature metadata intact — GEOJSON should retain all fields from DGN
• →Check geometry types (point, line, polygon) map cleanly between the two formats
• →Verify that z/elevation values and topology survive the conversion when working with terrain data
• →Always keep a backup of your original files before converting
• →Choose the appropriate quality settings for your specific use case

Troubleshooting DGN to GEOJSON Conversion

• !GEOJSON features land in the wrong place after DGN to GEOJSON → verify the CRS/projection; mismatched coordinate systems shift geometry
• !Attribute columns missing in GEOJSON → some GIS formats have field name length or type limits; rename or cast columns first
• !DGN to GEOJSON drops the z/elevation dimension → pick a target format that supports 3D geometry
• !GEOJSON file won't open in your GIS app → confirm the format version and any required sidecar files (e.g. .prj, .shx) are present

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