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Remove Lines Containing…

Filter your list by string or regular expression. Optionally invert to keep only matches, or toggle case sensitivity for fuzzier matching.

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How it works

Each line is tested against the pattern. By default, lines that match are removed; with invert on, only matching lines are kept. Regex mode uses JavaScript's RegExp engine.

How to use it

  1. Paste the source list

    Drop in a log file, a URL list, a wordlist, anything line-based that has rows you want gone.

  2. Write the pattern

    Type a literal string or a JavaScript regex. Toggle case sensitivity. Toggle invert to keep matches instead of dropping them.

  3. Filter the lines

    Each line is tested against the pattern. Matches are dropped (or kept, with invert on). Invalid regex returns the input unchanged.

  4. Copy the filtered list

    Take the noise-free output into your monitoring dashboard, your import script, or your next analysis step.

Use cases

Drop debug or test lines from a log file.

Keep only URLs that match a pattern.

Remove lines containing forbidden words from a wordlist.

Quickly reduce noise in a paste.

Your data never leaves your browser

Every utility runs entirely on your device. Nothing is uploaded, nothing is stored on a server. You can disconnect from the internet and they keep working.

Frequently asked questions

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