String Builder
Join lines into one string.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
String Builder
How to use this tool
- Enter one item per line, choose a separator, prefix and suffix.
- Press Generate to see the joined string.
- Use Load sample, Copy result or Clear as needed.
Worked example
Lines alpha, beta and gamma joined with a comma and a space give: alpha, beta, gamma.
What this tool does not do / Limits
This joins text only. It does not run code, format code, or change the meaning of the items you enter.
Frequently asked questions
Does it keep empty lines?
No. Empty lines are skipped, so the result contains only items with text.
Can the separator be more than one character?
Yes. Any short separator text works, such as a comma and a space, a dash, or a pipe character.
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