Filter Text Lines

Quickly include or exclude lines based on a specific text pattern or regular expression.

0 Lines | 0 Chars

Keeps only the lines that contain the specified text pattern.

0 Lines | 0 Chars
ReadOnly Mode

Smart Filtering

Filter lines by simple text match (start, end, contains) or complex patterns.

Regex Support

Full Regular Expression support for advanced users to match complex patterns.

Secure & Private

All filtering happens in your browser. Your data never leaves your device.

Try These Examples

Example 1

Filter Containing "error"

Keep only lines that contain the word "Error".

Example 2

Remove Comments

Remove lines starting with // or # using Regex.

Example 3

Keep Lines Starting With >

Filter to keep only lines starting with ">".

Ultimate Guide: Filter & Extract Text Lines

Master the art of text processing with our powerful line filter tool. Whether you're cleaning up data, analyzing logs, or extracting specific information, this tool gives you granular control over your text.

Precise Filtering

Use "Contains" mode to keep only the lines that matter. Perfect for extracting error logs, email addresses, or specific data points from large datasets.

Regex Mastery

Unlock advanced potential with Regular Expressions. Match complex patterns like phone numbers, IP addresses, or custom formats with the "Regex" mode.

Pro Tip: Negative Filtering

Need to remove noise? Use "Remove Lines Containing" or "Regex Remove" to strip out unwanted lines and leave only the clean data behind.