Convert E00 to TOPOJSON Online - Free & Fast

What is E00?

ArcInfo Exchange (E00) is a proprietary interchange format developed by ESRI for exporting and importing Arc/Info coverages, encoding vector topology, attributes, and raster data in an ASCII text file for data migration between GIS systems.

What is TOPOJSON?

TopoJSON is an extension of GeoJSON that encodes topology, sharing boundary arcs between adjacent features to dramatically reduce file size for map data.

When Should You Use E00 vs TOPOJSON?

E00 vs TOPOJSON: Key Differences

• •The core technical difference: E00 relies on lossy compression whereas TOPOJSON uses lossy compression.
• •Since both E00 and TOPOJSON use lossy compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
• •Alpha channel support: TOPOJSON lacks transparency support.
• •File sizes: E00 files typically range 100KB to several GB depending on coverage complexity and TOPOJSON files 80% smaller than equivalent GeoJSON for administrative boundaries.
• •Primary audience: E00 is built for legacy arcinfo data migration, gis archival data recovery scenarios, while TOPOJSON focuses on web choropleth maps, data visualization, boundary simplification — pick the format that matches your output requirement.

Advantages of E00

• ✓At its core, E00 relies on lossy encoding — a design choice that makes it perfect for Legacy ArcInfo data migration, GIS archival data recovery.
• ✓You won't run into compatibility issues with E00 — it's a universal standard across platforms.
• ✓File size management with E00: aggressive compression with minimal visible quality loss.
• ✓Every major application in the Legacy ArcInfo data migration, GIS archival data recovery space supports E00 natively.

Advantages of TOPOJSON

• ✓TOPOJSON uses lossy compression tailored for Web choropleth maps, data visualization, boundary simplification.
• ✓TOPOJSON is supported natively on virtually every device, browser, and operating system.
• ✓TOPOJSON files are compact and quick to transfer, even over slow connections.
• ✓TOPOJSON integrates seamlessly with all major creative tools and workflows.

Common Use Cases for E00 to TOPOJSON Conversion

Industry Applications

Best Practices for E00 to TOPOJSON Conversion

• →When converting E00 to TOPOJSON: confirm the coordinate reference system (CRS / projection) is preserved or explicitly reprojected
• →Keep attribute tables and feature metadata intact — TOPOJSON should retain all fields from E00
• →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 E00 to TOPOJSON Conversion

• !TOPOJSON features land in the wrong place after E00 to TOPOJSON → verify the CRS/projection; mismatched coordinate systems shift geometry
• !Attribute columns missing in TOPOJSON → some GIS formats have field name length or type limits; rename or cast columns first
• !E00 to TOPOJSON drops the z/elevation dimension → pick a target format that supports 3D geometry
• !TOPOJSON 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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