Remove Duplicate Lines | Clean Consecutive Duplicates from Text
Quickly remove consecutive duplicate lines from text while preserving unique entries. Ideal for cleaning logs, lists, and repeated data. All processing runs locally in your browser for speed and privacy.
How to Use This Tool
- 1
Paste your text into the input area (one line per item).
- 2
Enable case-sensitive mode if needed.
- 3
Click ‘Remove Duplicates’ or enable Live Mode for automatic processing.
- 4
Review the cleaned text with duplicates removed.
- 5
Copy or download your deduplicated result.
Use Cases & Examples
Log File Cleanup
Clean log files by removing repeated entries or consecutive error messages.
Sorted List Deduplication
Remove adjacent duplicates in sorted data lists while preserving order.
Data Preprocessing
Prepare CSV or exported database text for analysis by removing duplicates.
Content Merging & Text Cleanup
Clean generated or merged text by removing duplicate lines.
How Adjacent Deduplication Works
Each line is compared with the previous one; identical lines are skipped.
Case-sensitive mode adjusts matching behavior (e.g., 'A' ≠ 'a').
Blank lines remain unless they repeat consecutively.
The first occurrence in each duplicate group is retained.
All operations are processed locally in your browser.
Frequently Asked Questions
Q.How does adjacent deduplication work?
A. It removes only consecutive duplicates, leaving non-adjacent ones untouched.
Q.Can I enable case-sensitive matching?
A. Yes—turn on case-sensitive mode to distinguish between 'Apple' and 'apple'.
Q.Does it remove all duplicates or only consecutive ones?
A. No—it removes only adjacent duplicates. To remove all duplicates, sort your list first.
Q.Is my data secure?
A. Everything runs in your browser with no uploads, ensuring total data privacy.
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