Question 1

What happens to my feature attributes during conversion?

Accepted Answer

They come along. Names, descriptions, and custom properties are carried into the target format as far as it allows: GeoJSON and KML (ExtendedData) keep everything, CSV gets one column per attribute, and Shapefile truncates column names to its 10-character limit — a format restriction, not a converter choice.

Question 2

Why are my converted coordinates in a different order?

Accepted Answer

GeoJSON stores longitude first, latitude second (per RFC 7946), which is the reverse of how coordinates are usually spoken. The converter handles the ordering correctly for each format; if points look swapped in your application, the application is reading the axes in the wrong order, not the file.

Question 3

How does converting to CSV handle geometry?

Accepted Answer

Point coordinates are written as X and Y columns by default (you can turn this off in the options). Lines and polygons have no natural single-row representation in CSV, so their attribute rows are exported without geometry — use GeoJSON if you need the shapes.

Question 4

Can I upload a Shapefile as a single .shp?

Accepted Answer

Yes, with caveats. A Shapefile is really a bundle (.shp geometry, .dbf attributes, .prj projection). We reconstruct the missing .shx index automatically, but without the .dbf your features arrive with no attributes, and without the .prj we assume the coordinate system. For full fidelity, keep the reprojection option on and expect geometry-only output from a lone .shp.

Question 5

What does "Reproject to WGS84" do?

Accepted Answer

Converts the coordinates to standard latitude/longitude (EPSG:4326), which is what web maps, Google Earth, and GPS tools expect. Leave it on unless you specifically need to keep a local projected coordinate system. It's on by default because a Shapefile in a regional projection dropped onto a web map otherwise lands in the wrong place entirely.

Question 6

Why did some features disappear after conversion?

Accepted Answer

By default the conversion stops on invalid geometry so you notice the problem. If your source has a few broken features you're happy to lose (self-intersecting polygons are the usual culprit), enable "Skip invalid features" and the rest converts normally — the log shows what was skipped.

Question 7

What's the maximum file size?

Accepted Answer

Free accounts: 25MB per file. Files are processed with GDAL — the same library inside QGIS — and permanently deleted within 24 hours.

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