Interleave / Zip Lines
Merge two or more lists by alternating lines. Like zipping two lists together into a single interleaved sequence.
About This Free Online Interleave / Zip Lines
Our free online Interleave / Zip Lines tool merges two or more lists by alternating lines from each. Like zipping a zipper, it takes one line from the first list, then one from the second, and so on, creating a single combined sequence. You can interleave up to 5 lists at once. Perfect for merging shopping lists, combining schedules, alternating interview responses, or creating A/B comparison output. All processing is done in your browser.
Features of Our Interleave / Zip Lines
- Interleave 2 to 5 lists
- Alternating line-by-line merge
- Preserves line order within each list
- Show line source labels option
- Real-time output preview
- 100% private — browser-only processing
How to Use the Interleave / Zip Lines
The Interleave / Zip Lines works right in your browser — no signup, no installation. Follow these steps:
- Paste each list into its own input area. Use the Add/Remove buttons to control the number of lists.
- Lines are automatically interleaved in the output as you type.
- Optionally show labels indicating which source each line came from.
- Copy the interleaved output.
Frequently Asked Questions About Interleave / Zip Lines
What happens if lists have different lengths?
Interleaving continues until the longest list is exhausted. Missing lines from shorter lists are simply skipped.
Can I interleave more than 2 lists?
Yes. Use the + button to add up to 5 list input areas.
Why Choose the Interleave / Zip Lines?
Bulk text edits that would take ages by hand happen in one step with the Interleave / Zip Lines. It applies your changes the moment you make them, entirely in the browser, so your content stays on your device and the result is ready to copy immediately.