Geoprocessing in QGIS
You can use Geoprocessing Tools in QGIS to perform spatial operations.
Geoprocessing Tools
Open the Geoprocessing Tools in QGIS;
In the Toolbar menu, click on Vector , select Geoprocessing Tools, and see all the available Geoprocessing Tools.

Sl No. | Tool | Purpose |
---|---|---|
1 | Buffer | Create buffer around features based on fixed distance based on distance field. |
2 | Clip | Overlay layers such that output contains areas that intersect the clip layer. |
3 | Convex hull | Create minimum convex hull for an input layer, or based on an ID field. |
4 | Difference | Overlay layers such that output contains areas not intersecting the clip layer. |
5 | Dissolve | Merge features based on input field. All features with identical input values are combined to form one single feature. |
6 | Intersect | Overlay layers such that output contains areas where both layers intersect. |
7 | Symmetrical difference | Overlay layers such that output contains those areas of the input and difference layers that do not intersect. |
8 | Union | Overlay layers such that output contains intersecting and non-intersecting areas. |
9 | Eliminate sliver polygons | Merges selected features with the neighboring polygon with the largest area or largest common boundary. |