Text & Writing
Keep Lines Matching Regex
Keep only lines that match a regular expression.
Good to know
Frequently asked questions
How do I use it?
Enter your text, adjust the options and press “Keep matching lines”. Check the result, then copy or download it.
How does it work?
Each line is tested separately with JavaScript regular expressions. Invalid patterns show the browser's error message.
Is my data uploaded?
No. Everything is processed in your browser and nothing is sent to a server. No account is needed.
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