Free Online Line Filter Tool
Quick Tips
- • This tool runs entirely in your browser - your data stays private.
- • Press Ctrl+V (Cmd+V on Mac) to quickly paste text.
- • Use the Copy button to save your result to clipboard.
- • Bookmark this page for quick access!
Filter and keep only lines matching specific criteria.
Examples
apple banana apricot cherry Filter: contains 'ap'
apple apricot
Error: File not found Info: Process started Error: Connection failed
Error: File not found Error: Connection failed
john@email.com no email here jane@test.org
john@email.com jane@test.org
TODO: Fix bug DONE: Update docs TODO: Add tests
TODO: Fix bug TODO: Add tests
Frequently Asked Questions
Include mode keeps only lines matching your criteria, removing everything else. Exclude mode removes lines matching your criteria, keeping everything else. Choose based on whether you want to extract or eliminate matches.
Yes, enable regex mode to use regular expression patterns for filtering. This allows complex pattern matching like finding lines with email addresses, phone numbers, or any custom format.
"Starts with" only matches lines beginning with your text. "Contains" matches lines with your text anywhere within them. Use "starts with" for prefix filtering.
You can filter the results of a previous filter to apply multiple conditions. This layered approach lets you progressively narrow results using different criteria.
Yes, toggle case sensitivity to control matching. Case-insensitive finds all capitalizations; case-sensitive matches only exact letter case.
Yes, all filtering happens locally in your browser. Your text is never sent to any server, ensuring complete privacy for your content.
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