2.61. Convert lines to polygons
Each line turns into a polygon. Straight and self-intersected lines are omitted. Multilines are exploded to multiple features.
Input: linear vector layer in geojson or geopackage format
Output: polygon layer in geojson or geopackage format, linear layer with remaining self-intersecting lines
Launch tool: https://toolbox.nextgis.com/operation/lines2poly