What Is MapInfo TAB (and MIF/MID)? Format Overview
Learn what MapInfo TAB and MIF/MID files are, how sidecar files work, and how to open or convert MapInfo datasets online.
MapInfo is a family of GIS formats commonly seen as TAB datasets or MIF/MID pairs. Like Shapefile, MapInfo datasets can include multiple files that must stay together for correct loading.
To preview MapInfo files in the browser, use: /open-tab-online/.
What MapInfo TAB and MIF/MID contain
Common files include:
.tab— dataset definition.dat— attribute data.map— geometry.id— index
For MIF/MID:
.mif— geometry and structure.mid— attributes
Common issues
- Uploading only
.tabwithout its sidecars can prevent correct loading. - If attributes look missing, check that
.dator.midis included.
How to open MapInfo online
- Go to /open-tab-online/.
- Upload the full dataset set together, or zip all files into one archive.
- Inspect the layer and attribute table.
Convert MapInfo to other formats
- MapInfo to GeoJSON: /mapinfo-to-geojson/
- MapInfo to GeoPackage: /mapinfo-to-gpkg/
- MapInfo to Shapefile: /mapinfo-to-shapefile/
Related reading
- Comparison: /blog/mapinfo-vs-shapefile/
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