Can I add only a prefix or only a suffix?

Yes — leave either field empty. Fill in just the prefix to prepend text, just the suffix to append text, or both to wrap each line.

What happens to empty lines?

By default empty and whitespace-only lines are skipped so you do not get stray prefixes on blank rows. You can turn that off to apply the prefix and suffix to every line.

Is my text uploaded anywhere?

No — all processing happens locally in your browser and nothing is sent to a server.

Add Prefix / Suffix to Lines

Add text to the start or end of every line.

Add a prefix or suffix to every line

Paste a list and add text to the start and end of every line at once — perfect for turning a plain list into bullet points, quoting CSV values, wrapping items in tags, or building SQL IN (...) lists.

Optionally skip empty lines and trim each line first. Everything runs in your browser — nothing is uploaded.