What Is a Shapefile? (.shp + .dbf + .shx Explained)

A Shapefile is a widely supported GIS vector format originally popularized by ESRI. Despite the name, a “Shapefile” is usually not a single file. It’s a small set of files that belong together, typically including geometry, attributes, and an index.

To open one in the browser, use the Shapefile viewer: /open-shapefile-online/.

Why Shapefile has multiple files

Common Shapefile sidecars include:

• .shp — geometry
• .dbf — attribute table (fields and values)
• .shx — geometry index
• .prj — coordinate reference system (recommended)

If you upload only .shp, many viewers cannot load the layer correctly because attributes or the index may be missing.

When Shapefile is a good choice

Use Shapefile when you need:

• Maximum compatibility with existing GIS tools
• A simple “one layer” dataset you can package as a zip archive
• Interoperability with workflows that still expect .shp

Common issues

• Missing sidecars: forgetting .dbf or .shx often breaks loading.
• CRS problems: without .prj, the layer can appear in the wrong location.
• Packaging: because it’s multi-file, it’s easiest to share as a single .zip.

How to open a Shapefile online

1. Go to /open-shapefile-online/.
2. Upload the full set (.shp, .dbf, .shx, and ideally .prj).
3. If the dataset is multi-file, upload a .zip containing all sidecars together.

Convert Shapefile to modern formats

• Shapefile to GeoJSON: /shapefile-to-geojson/
• Shapefile to GeoPackage: /shapefile-to-gpkg/

Related reading

• Tutorial: /blog/how-to-open-shapefile-online/
• Comparison: /blog/shapefile-vs-geopackage/