Dissolve & Merge Spatial Polygons
Merge touching polygons matching an attribute in your KML or GeoJSON. Free browser tool with no upload required for secure GIS cleaning.
Pro is Only 3$ per Month. Premium Tool Access, Ad Free, Bulk Conversion!
Select KML, KMZ or GeoJSON file(s) to merge polygons
or drag and drop them here
Select File
Pro is Only 3$ per Month. Premium Tool Access, Ad Free, Bulk Conversion!
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Frequently Asked Questions
Q:Is Dissolve tool free to use?
Yes, dissolving spatial features is 100% free.
Q:Does Dissolve tool upload my files to a server?
No, all geometry merging happens in your browser with no upload required.
Q:What file formats does Dissolve tool support?
Supports KML and GeoJSON files for geometry dissolution.
Q:Can I dissolve based on a specific property?
Yes, you can choose an attribute to group features for merging.
Q:What does it mean to dissolve polygons?
Dissolving merges adjacent or overlapping polygons that share a specific attribute into a single larger polygon, removing internal boundaries.
Q:Can it handle multi-part polygons?
Yes, the tool automatically manages MultiPolygons and GeometryCollections during the dissolve process.
Q:Does it work with large GeoJSON files?
Yes, because processing happens locally in your browser, it can handle large datasets without server timeout limits.
Pro is Only 3$ per Month. Premium Tool Access, Ad Free, Bulk Conversion!