Join Lines of Text Online Free
Merge multiple lines of text into one line using a custom separator.
What is Join Lines?
Takes a multi-line input and joins all lines into a single output line, separated by your chosen delimiter. Supports comma, space, semicolon, pipe, newline, or any custom separator.
Common Use Cases
Converting a bullet list to a CSV row, building SQL IN() clause values, joining address parts into one line, merging multiline config keys, and collapsing whitespace.
How It Works
Splits input on newlines, optionally trims each line, then joins the array with the chosen separator using Array.join().
Frequently Asked Questions
Can I skip blank lines when joining?
Yes — the tool has a "Skip blank lines" option to ignore empty lines.
Is there a limit on how many lines I can join?
No limit — the tool runs in your browser and can handle as many lines as you paste.
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