String Tools

Add String Prefix

Use Add String Prefix to work with your content in a fast and reliable way. Paste or type your input, adjust the available options, preview the result instantly, and then copy or download the final output. This online utility is part of a broader collection of developer‑friendly tools designed for everyday workflows.

Updated 2025-12-01

Add String Prefix

Prepend text to lines

Add a prefix to the whole string or to every line.

Prefix

Apply Per Line

Add prefix to each line

Skip Empty Lines

Don't prefix blank lines

Input Text

Add any prefix text. Useful for adding comment markers, bullet points, or line numbers.

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