Understanding n8n Looping and Item Processing

This workflow provides a beginner-friendly demonstration of how n8n handles item looping and array processing. It showcases two key behaviors: processing an entire array as a single item versus splitting the array into individual items and processing them separately. The workflow begins with a manual trigger where a JSON payload containing an array of URLs is pasted. The array is then split into individual URL objects, demonstrating n8n’s ability to handle both batch and item-wise operations. Nodes including ‘Split Out’ and ‘Loop Over Items’ are used to exemplify default built-in looping, while ‘Code’ nodes add a constant parameter (u001ength) to each item, illustrating how to modify data during iteration. Result nodes display outputs at different stages, showing how the data transforms from a single array to multiple processed items with added parameters. Practical use cases include batch processing of URLs, APIs, or data lists where understanding item-wise versus batch handling is crucial for building efficient automation workflows.