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Join / Merge Text (Line by Line)

Merge two lists line by line and combine each pair with a custom separator. Perfect for merging first and last name columns, or joining CSV data.

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How to Use Join/Merge

Paste two lists — one per text box. Each line from List A is paired with the corresponding line from List B, joined by the separator you specify. Common use cases: merging first + last names, combining email addresses with domains, joining key and value columns from a spreadsheet.

FAQ

What happens if the lists have different lengths?
The shorter list determines the output length. Extra lines in the longer list are ignored.
Can I use a tab as separator?
Yes — type \t in the Separator field or paste an actual tab character.
Can I merge more than two lists?
This tool supports two lists. For more columns, merge two lists first, then merge the result with the third.