What happens to a point or a vertical line?
A zero-area bounding rectangle is exported as a Point or LineString so the output does not contain a collapsed polygon.
Free · Local file processing · No account
Generate Feature Bounds Online
Export a bounding shape for each feature or a single extent for the whole dataset.
Loading the local file tool…
Loading the local file tool…
How to use this tool
- 1. Choose a dataset or load the working example.
- 2. Run the analysis and review the reported output count.
- 3. Download GeoJSON and inspect the result in Studio.
Limits and checks before sharing
- Axis-aligned bounds use longitude/latitude; these are not minimum rotated rectangles. Whole-layer mode does not copy individual attributes.
- WGS 84 longitude/latitude only; reproject projected data first. Keep the original and inspect known locations in the output.
- Up to 50 MB per file, 2,000 features and 20,000 vertices per layer. Polygon overlays are limited to 10,000 feature pairs. Invalid inputs fail visibly rather than being silently skipped.
If processing fails, check the file extension and source contents. Use a smaller batch if memory runs low. The original files are never overwritten. Inspect known locations and attributes before sharing a result.
Frequently asked questions
Are these calculations local?
Yes. Files and calculations stay in your browser. Page resources require an initial network load. Map previews can request external map tiles. No account is needed.
Continue with your result
Inspect outputs directly using the result button above. Choose a compatible next operation in the result panel to continue locally without downloading again. These related links open a fresh task. Share the downloaded file through your own channels; local files are not published to a hosted URL.
Add Area & Length Fields Online
Add geodesic area and line length to your dataset without overwriting existing attributes.
Clip Polygons by Mask Online
Keep the part of each source polygon inside a polygon mask, without duplicating overlapping mask areas.
Convert GeoJSON output to KML for Google EarthCheck GeoJSON structure before publishing