Runs locally in your browser
Combine two lists by appending, interleaving, creating a unique union, or returning only shared values.
About this tool
Merging lists can mean simple concatenation, alternating rows, removing duplicates across both sources, or keeping only shared values.
This tool keeps those meanings separate so the output matches the next system in your workflow.
FAQ
Remaining items from the longer list are appended after alternating pairs are exhausted.
Unique union deduplicates across both inputs.
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Guides
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