Duplicate Line Remover
Remove repeated lines from any list while keeping the first occurrence and the original order.
Runs in your browser — nothing is uploaded0 characters · 0 words
0 characters · 0 words
About Duplicate Line Remover
Duplicate Line Remover deletes repeated lines from any list while keeping the first occurrence and the original order. It is a quick way to clean email lists, keywords, product codes, URLs and survey responses.
Choose whether matching is case-sensitive and whether surrounding spaces should be ignored, then copy or download the unique lines.
When to use it
- Removing duplicate emails from a contact list.
- Cleaning keyword lists for SEO and ads.
- Deduplicating URLs, IDs or product codes.
- Tidying survey answers and tags.
Tips for better results
- Turn off case sensitivity for emails and keywords.
- Turn on “ignore spaces” for data copied from spreadsheets.
- Use Text Sorter afterwards to sort the unique list.
How to use the Duplicate Line Remover
- Paste your list with one item per line.
- Choose case sensitivity and whether to ignore spaces.
- Copy or download the unique lines.
Frequently asked questions
Which copy of a duplicate is kept?
The first occurrence is kept and later repeats are removed, so the original order of your list is preserved.
Can I also sort the list?
Yes — paste the result into the Text Sorter, which can also remove duplicates while sorting.
How many lines can it handle?
Tens of thousands of lines are processed instantly in a modern browser.
Is my list uploaded?
No. Processing happens in your browser, so private lists stay on your device.