Combine two lists in alternating order
Paste each list into its own box. The result takes one line from A, then one from B, and repeats. When one list ends, remaining lines from the other list are appended. Use it to pair prompts and answers, labels and values, or two ordered sets of notes.
Blank lines and line endings
Duplicates, spaces, and blank lines are preserved. A completely empty input represents zero lines. A final newline terminates the last line and does not add an extra blank item; two final newlines include one blank item. Windows and old Mac line endings are normalized to a newline. Output uses newline separators and ends in a newline when at least one item exists, preserving a final blank item when copied.
Limits and privacy
Each input accepts up to 100,000 characters. This tool interleaves rows without sorting, matching, or deduplicating them. Text processing stays in your browser. Copy the result into your editor or spreadsheet.