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Text Cleanup & Line Tools

Add Prefix to Lines

Prefix list items, paths, labels, code fragments, or plain text lines while optionally skipping blank lines.

Text cleanup runs locally in your browser. These tools operate on plain text lines; structured CSV/JSON/XML and regex workflows remain in their dedicated tools.

How to use this Add Prefix to Lines

Add the same prefix to every line of text. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.