🔗 Zip Lists · Custom Separator · Free

Merge
Lines

Combine two lists by merging corresponding lines together. Choose any separator — comma, tab, space, pipe or custom. Perfect for creating key=value pairs, CSV columns and more.

comma tab space pipe equals colon arrow
Skip empty lines Trim whitespace
List A
List B
Merged result

Free Online Merge Lines Tool — Zip Two Lists Together

ExperToolBox's merge lines tool combines two lists by pairing each line from List A with the corresponding line from List B, joining them with any separator you choose. This is sometimes called "zipping" lists — the same concept as Python's zip() function or paste -d in Unix.

Common use cases

Creating key=value configuration pairs from two separate lists. Building CSV data by combining a list of names with a list of values. Creating HTML option tags by merging values and display labels. Combining first names and last names. Merging URLs and descriptions. Building SQL insert values from two columns of data.

FAQ

What if the lists have different lengths?
The tool merges up to the length of the longer list. Lines without a pair from the other list are included alone (just the value with no separator).
Can I use a multi-character separator?
Yes — any text works as a separator, including multiple characters, spaces, HTML tags, or any string you need.

Other Free Text Tools

➕ Add Prefix/Suffix
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