Remove Duplicate Lines
Remove duplicate lines from your text instantly with this free online duplicate line remover.
Use the tool below to paste your text, delete repeated lines and keep only unique lines while preserving the original order.
Original lines
Unique lines
Duplicates removed
Empty lines
What is a Duplicate Line Remover?
A duplicate line remover is a simple online text tool that removes repeated lines from a block of text. It helps you clean lists, notes, data, keywords, URLs, emails, tags and other line-based content.
Instead of checking every line manually, you can paste your text into the tool and instantly generate a cleaner version with duplicate lines removed.
What can you use it for?
You can use this tool to clean copied lists, remove repeated keywords, organize data, clean URL lists, prepare content drafts, process notes or remove duplicate entries from any line-by-line text.
The tool keeps the first occurrence of each line and removes the repeated ones. This means your original order is preserved while duplicate lines are deleted.
How to use the Remove Duplicate Lines tool
Step 1: Paste your text
Copy and paste your text into the input box. Each line will be checked against the others.
Step 2: Choose your options
You can trim spaces before comparing lines or ignore uppercase and lowercase differences when detecting duplicates.
Step 3: Remove duplicates
Click the remove button to generate a cleaned version of your text with duplicate lines removed. Then copy or download the result.
Common use cases
For writers
Writers can use this tool to clean notes, outlines, repeated ideas, copied text and draft content.
For SEO and content creators
SEO specialists and content creators can remove duplicate keywords, tags, URLs, headings and content ideas from their lists.
For developers
Developers can clean lists of values, logs, IDs, file paths, URLs, configuration lines or other text-based data.
For students
Students can use it to clean notes, references, study lists and copied information from different sources.
For data cleanup
Anyone working with simple text data can use the tool to remove repeated entries before copying the cleaned result into another document or spreadsheet.
Related tools
Is this Duplicate Line Remover free?
Yes. This duplicate line remover is completely free to use.
Is my text stored?
No. Your text is processed directly in your browser. It is not uploaded, saved or stored.
Does the tool keep the original order?
Yes. The tool keeps the first occurrence of each line and removes repeated lines after that.
Can I ignore uppercase and lowercase differences?
Yes. You can enable the option to treat lines with different capitalization as duplicates.
Can I trim spaces before comparing lines?
Yes. You can trim spaces before comparing lines, which helps detect duplicates that only differ because of extra spaces.
Can I download the result?
Yes. You can download the cleaned text as a TXT file directly from the tool.
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