Dissolve — Tool (QGIS)

In QGIS: Processing Toolbox › Vector geometry › Dissolve (native:dissolve); menu: Vector › Geoprocessing Tools › Dissolve.

Realises:

• Dissolve
• Explode — with Keep disjoint features separate ticked

Settings that matter

• Dissolve field(s) dissolves per value (one feature per category); leave it empty to dissolve everything.

Watch out

• With Keep disjoint features separate the pieces can share a fid; see Renumber feature ids (Tool - QGIS).

Checked in QGIS 4.2.2, October 2026. Names and options can differ in other versions.