Remove Specific Lines – Advanced

How to Remove Specific Lines?

Paste your text into the input area and define which lines should be filtered.
The tool applies your rules instantly and removes only the matching lines—no uploads or delays.

1. Paste your text into the input field.
2. Enter keywords, phrases, or filtering rules.
3. Click Remove Specific Lines.
4. The result updates instantly based on your rules.
5. Copy the output or download it as a .csv file.

🔒 Privacy Note: All filtering happens locally in your browser. Your data never leaves your device.

Case Sensitive vs Case Insensitive — What’s the Difference?

Choose how text matching works by enabling Case Insensitive (default) or Case Sensitive mode. This determines whether letter casing (A ≠ a) matters during filtering.

• Case Insensitive (default): Ignores capitalization.
• Case Sensitive: Treats uppercase and lowercase as distinct.
• Useful for code, IDs, usernames, or strict text rules.

Tip: Leave Case Insensitive enabled unless precise casing is required.

What Are the Filter Options?

Filter options control how matching rules are applied.
Choose whether to remove matching lines, keep them, or match exact lines only.

• * Remove filter: Deletes lines matching the pattern.
• % Keep filter: Keeps only lines matching the pattern.
• Exact line filter: Matches full lines only.

Tip: Start simple, then layer advanced rules if needed.

How to Check Duplicate Lines?

Enable Details mode to analyze duplicate lines.
The tool highlights repeated lines and shows frequency counts.

1. Enable Details mode.
2. Paste your text to see repeated lines.
3. Review or export duplicates if needed.

What Are the Line Counts & Statistics?

After filtering, clear statistics show exactly what changed.

• Input lines: Original line count.
• Removed lines: Lines filtered out.
• Output lines: Final remaining lines.