GeoTools

Vector Repair Tool

Fix common display and conversion problems in vector map files, such as unclosed areas, disconnected lines, overlaps, tiny fragments and invalid coordinates.

Fix common display problems

Clean bad coordinates, duplicate points, shape issues and overlaps

Clean messy shapes

Close unclosed areas, remove tiny fragments and optionally merge neighboring shapes

Local Processing

Files are processed locally in the browser

Upload and repair file

Upload GeoJSON, Shapefile, KML, GPKG and other vector data, choose what to fix, then download the repaired result

ファイルやフォルダをドラッグ＆ドロップ、またはクリックしてアップロード

What this tool can fix

Clean bad coordinates, duplicate points and empty features so files are easier to open and convert.
Fix wrongly drawn areas, such as polygons whose edges cross each other.
Handle small gaps between neighboring areas and parts that overlap each other.
Align line endpoints that are very close but not connected.
Remove very narrow or tiny area fragments to reduce messy map pieces.
Optionally merge neighboring shapes when you want many small pieces combined into larger shapes.

Problems to fix

Map comparison

After upload, the original data is shown first. After repair, the repaired result is overlaid so you can toggle layers and compare changes directly.

Upload a vector file to show the map preview here.