Paste your text
Paste your text into the input, with one item per line.
Remove Duplicate Lines
Remove duplicate lines from text instantly in your browser. Paste your list or log, choose options like case-sensitive or preserve order, and copy the de-duplicated output. Fast, free, and private.
Options
Results
Text is processed entirely in your browser and is never uploaded to any server.
HOW IT WORKS
How to remove duplicate lines
Paste your text, remove duplicate lines, and copy the result instantly. Everything runs in your browser with no uploads or data leaving your device.
Remove duplicate lines
The tool automatically removes duplicate lines. You can adjust options like case sensitivity or keeping the original order.
Copy the cleaned text
Copy the deduplicated text to your clipboard.
Why use this tool
Why Remove Duplicate Lines?
Lists and logs often contain repeated entries. Removing duplicates keeps data clean and reduces noise without running scripts or uploading files.
Useful when you need to:
Clean lists and exports
Turn duplicated rows into unique entries for emails, IDs, or keywords.
Deduplicate logs
Remove repeated log lines while keeping order or sort for easier review.
No scripts or installs
Runs in the browser; no command line or spreadsheet formulas needed.
Case-sensitive or not
Match exactly or treat uppercase and lowercase as the same, depending on your data.
Privacy
Private and Secure
Your text is never uploaded to a server. This tool runs entirely in your browser using client-side processing.
Data stays on your device
Your data never leaves your browser. No uploads, no cloud storage, no logs.
Nothing stored or sent
No text is stored or transmitted. Processing happens only in memory.
Fast and private
De-duplication is instant and runs locally at full browser speed.
FAQ
Frequently asked questions
Paste your text into the tool, and it will automatically remove duplicate lines. You can then copy the cleaned result instantly.
The fastest way is to use a browser-based deduplication tool. It removes duplicate lines instantly without requiring Excel, scripts, or manual sorting.
Yes. This tool runs entirely in your browser, so your text is never uploaded or sent to a server.
Preserving order keeps the first occurrence of each line in its original position. Duplicate lines are removed without changing the sequence.
Yes. You can remove duplicate lines while also stripping empty or blank lines in a single step.
You can choose whether matching is case-sensitive. For example, “Apple” and “apple” can be treated as the same or different lines.
Any line-based text works, including lists, logs, CSV rows, or copied data from spreadsheets.