📄 Filter Text Lines
Match lines by pattern or full regex — instant cleaning, log parsing, and data extraction
📥 Source lines
0 lines✅ Filtered result
🚀 How to Use the Line Filter Tool (Pattern & Regex)
This advanced tool helps you extract, clean, or analyze text lines instantly. Perfect for bloggers, developers, data analysts, and SEO specialists. Simply paste your text in the left box, define a pattern or regular expression (regex), and get matching lines on the right.
📌 Quick examples
- Plain text filter: type
errorto find all lines containing "error". Enable case insensitive to match "Error", "ERROR". - Regex mode: type
^\d{3}to match lines starting with exactly three digits. Try@\w+to find all mentions like @username. - Invert match: show lines that DO NOT contain the pattern — great for removing spam lines.
- Toggle Regex mode + Case insensitive: regex also respects the flag (e.g.,
errorbecomes /error/i).
🧰 Why this tool is essential
Whether you're parsing server logs, cleaning CSV extracts, or filtering keyword lists, this tool provides instant feedback. The professional interface supports large text blocks, and the regex engine is powered by native JavaScript, making it reliable and fast.
✨ Pro Tips for Advanced Use
- Regex anchors:
^start– lines starting with "start",end$– lines ending with "end". - Character classes:
[0-9]digits,[a-zA-Z]letters. - Grouping & alternation:
(cat|dog)matches lines containing 'cat' or 'dog'. - Use Invert match to exclude specific patterns like comments or empty lines (
^\s*$with invert hides blank lines).
📊 Privacy & Performance
All processing happens in your browser — your data never leaves the page. 100% private, no server uploads. Works offline after loaded. Optimized for Blogger, WordPress, or any HTML environment.
🔧 Filter Text Lines v1.0 – Fast pattern matching & regex filtering tool. Bookmark for daily text wrangling.
