n8n Node Guide: Merge

Description

Data Transformation node in n8n.

What It Does

Combine two input streams into one.

When To Use It

Joining data from parallel branches, enriching items, combining API results.

Key Parameters

Mode (Append, Combine, Merge by Key), join type (inner/left/outer)

Common Mistakes

Append mode loses binary data from one branch – use Combine to keep it.

Example

Merge by Key (orderId) joins order items with customer data from a parallel branch.

FAQ

Is this node included in n8n Community Edition?

Yes – Merge ships with the free Community Edition. No paid license needed.

For simple concatenation of two lists, Append mode is fastest.?

Where does it fit in a workflow?

Merge works with any other node – connect it after a trigger or data node, and feed its output into the next step. Standard n8n data flow: trigger -> transform -> act.

Is support included?

Yes – message the seller through the store and I will help you wire this node.