Remove duplicate lines instantly.
Clean repeated lines from lists, notes and text while preserving the first occurrence and original order.
Clean repeated lines from text and lists while keeping the first unique occurrence, with options for case sensitivity, spaces and empty lines.
About This Tool
ToolsFaction Remove Duplicate Lines cleans repeated entries from lists, notes, copied data and other line-based text. It preserves the first occurrence of each unique line and keeps the remaining content in its original order. You can choose whether matching should be case sensitive, trim spaces around each line and remove empty lines.nnThe tool runs directly in your browser and provides quick statistics showing how many lines were removed and how much the input was reduced.
How to Use
- Paste your text or list into the Input field.
- Choose whether duplicate matching should be case sensitive, whether spaces should be trimmed and whether empty lines should be removed.
- Select Remove Duplicates to generate the cleaned output.
- Copy the result, download it as a TXT file or move the cleaned output back into the input field.
Example
If a list contains “Apple”, “Banana”, “Apple” and “Orange”, the tool keeps the first “Apple” and removes the repeated occurrence. With case sensitivity disabled, “Apple” and “apple” are also treated as duplicates.
Frequently Asked Questions
Does the tool keep the original line order?
Yes. The first occurrence of each unique line is preserved, and the remaining lines stay in their original order.
Can duplicate matching be case sensitive?
Yes. Enable Case sensitive when entries such as Apple and apple should be treated as different lines.
Can I remove blank lines at the same time?
Yes. Keep Remove empty lines enabled to exclude blank lines from the cleaned result.
What does Trim spaces do?
It removes leading and trailing spaces from each line before duplicate matching and output.
Can I download the cleaned result?
Yes. You can download the output as a plain TXT file.
Is my text sent to a server?
The duplicate-line processing is designed to run directly in your browser.