Merge GeoJSON

All features from all inputs are preserved with their original properties. Features from different inputs may have different property keys — this is valid in GeoJSON.

Basic JSON validation is performed. For full GeoJSON spec validation use the GeoJSON Validator on each file before merging.

Yes. Add additional input panels to merge three or more FeatureCollections in one operation.

No. The merge is a simple concatenation of all features. Use the GeoJSON Optimizer to deduplicate if needed.

There is no hard limit. Large FeatureCollections are merged without issues.