Remove Duplicate Lines from Text
Remove repeated lines and keep only unique text entries in their original order
Duplicate lines commonly appear when copying data from spreadsheets, logs, exports, or merged text files. This tool removes duplicate lines from your text and keeps only the first occurrence of each line, preserving the original order. It works instantly in your browser and does not modify the content of individual lines, characters, or formatting.
Original Text
Cleaned Text
Example
apple banana apple orange banana
apple banana orange
Each duplicate line is removed, leaving only the first occurrence of every line.
What this tool does
This tool scans your text line by line and removes exact duplicate lines. Only the first occurrence of each line is kept, while all repeated lines are removed. The remaining text stays unchanged, including spacing, capitalization, and punctuation.
How duplicates are detected
- Each full line is compared exactly as written
- Only exact matches are considered duplicates
- The original line order is preserved in the output
Lines must be completely identical to be considered duplicates. Similar but different lines are not removed.
When to use Remove Duplicate Lines
- Removing duplicate lines from lists copied from spreadsheets
- Cleaning duplicate entries from logs, reports, or exports
- Preparing unique rows for CSV or database import
- Deduplicating text generated by scripts or automated exports
- Cleaning pasted text with repeated lines
Common use cases
Frequently asked questions
Related tools
Summary
Remove Duplicate Lines helps you clean text by deleting repeated lines and keeping only unique entries in their original order. It is ideal for cleaning lists, logs, exports, and text prepared for CSV or database import.