Line Filter

Filter pasted lines by a plain-text substring with optional case sensitivity, without regex semantics.

Lines

Literal text

Mode

Case-sensitive

ReadyPlain literal matching only; use Regex Line Filter for regular expressions.

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 Line Filter

Keep or exclude lines containing literal 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.