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I am searching for a tool that can merge the polygons that touch each other. I am not very good with python or programming. Is there a function in the toolbar that can help me with the problem?

In the picture I want the bottom left to merge with each other but not with the other polygons.

polygons

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    Merge, then run multi- to single-part.
    – Erik
    Commented Dec 1, 2021 at 11:37
  • Thanks, that really helped!
    – Tristan
    Commented Dec 1, 2021 at 11:41
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    You can also try Dissolve
    – Bera
    Commented Dec 1, 2021 at 14:23

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Basically, the dissolve tool does what you need. It dissolves all features on a layer into a single one with multiple parts. If your features had a common ID indicating, which features touch each other, and which don't, you could hand this ID to the dissolve-GUI and only features with an identical ID would be dissolved into larger, multipart features. Be aware that dissolving also removes individual attributes.

Since you don't have that ID, you then need to run multi- to single-part in order to undissolve/split your multi-part geometry into single features. Now your touching polygons will have become one, while the other polygons are still separate features.

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