Free Online Duplicate Line Remover Tool
Remove exact duplicate lines from pasted text while keeping the first occurrence. Clean repeated entries in a list inside your browser.
Paste text or code below
This application processes pasted content in this browser. No file upload is required.
Supported inputs, outputs, and browsers
- Supported input
- Pasted Unicode text
- Output
- Copyable text, UTF-8 TXT
- Browser compatibility
- Use a current version of Chrome, Edge, Firefox, or Safari with JavaScript, File API, Canvas, and downloads enabled. Available memory and browser format support can limit very large files.
How to use Duplicate Line Remover
- 1.Put one entry on each line and inspect entries that differ only by capitalization or spaces before deciding they are duplicates.
- 2.Run the operation with the displayed controls, then open and review the result before sharing it.
Limitations
- Matching is exact; this does not merge spelling variants or identify two differently written names as the same person.
Privacy and processing
Local browser processing
The input content never leaves your device. Processing happens inside your browser, with no file or text upload to an external processing server. No registration is required, so the content-processing step is private to your device.
Frequently asked questions
What should I know before using Duplicate Line Remover?
Matching is exact; this does not merge spelling variants or identify two differently written names as the same person.
Where is my input processed?
The input content never leaves your device. Processing happens inside your browser, with no file or text upload to an external processing server. No registration is required, so the content-processing step is private to your device.