Free · Local file processing · No account

Edit Feature Attributes Online

Edit attribute values, add or rename fields, and remove unwanted columns before sharing a GIS dataset.

Loading the local file tool…

How to use this tool

1. Load a dataset or use the working example.
2. Review fields, geometry issues or split groups, then run the operation.
3. Download the output and report; keep the original file for comparison.

Limits and checks before sharing

Edits are in memory until you download. KML styling and folders are not retained by GeoJSON conversion.
Use the value editor’s explicit data type; a numeric identifier can also be kept as a string.

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

Does attribute editing change geometry?

No. This tool edits feature properties. Geometry coordinates remain unchanged.

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.

Split Dataset by Attribute Online

Turn a mixed dataset into separate files for each attribute value.

Add Area & Length Fields Online

Add geodesic area and line length to your dataset without overwriting existing attributes.

Convert GeoJSON output to KML for Google Earth Check GeoJSON structure before publishing