Free Duplicate Line Remover
Remove repeated lines from keyword lists, email lists, names or any text. Ignore case and extra spaces, keep the original order or sort, and see how many duplicates were removed. Paste your list to remove duplicate lines in one click, right in your browser.
How to remove duplicate lines
- Paste your list, one item per line.
- Keep “Ignore case” and “Ignore spaces” on so “SEO course” and “seo course ” count as the same line.
- Choose to sort or keep the original order.
- Copy or download the unique lines. Tick “Show duplicates” to see what was removed.
When you need it
| List | Why remove duplicates |
|---|---|
| Keywords from several research tools | Avoid planning the same keyword twice |
| Leads from forms, ads and WhatsApp | Avoid calling the same person twice |
| Email lists | Avoid sending the same email twice, which annoys subscribers |
| Giveaway entries | Give every person one fair chance |
| Hashtags and tags | Repeated tags waste space |
Keep order or sort?
Keeping the original order is best when the order matters, like a ranked list or steps. Sorting A to Z makes it easier to scan a long keyword or name list and spot near-duplicates, such as “seo course faridabad” and “seo courses faridabad”, that the tool treats as different lines.
Related clean-up tools
Sort and shuffle lists with the text sorter, remove stray spaces with the extra space remover, and pick fair winners from a cleaned list with the random name picker.
More free tools and guides
Practise tools like this on real projects in our digital marketing course in Faridabad, with weekday, weekend and online batches.
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Frequently Asked Questions
Is this duplicate line remover free?
Yes. It is free with no sign-up, and your list is processed in your browser.
Does it keep the first or last copy of a duplicate?
It keeps the first time a line appears and removes later repeats, so the original order is preserved.
Can it treat SEO and seo as the same?
Yes. Keep Ignore upper and lower case ticked and lines that differ only in case count as duplicates.
Can I remove duplicate emails from a list?
Yes. Paste one email per line. With case ignored, the same address in different capitals is removed.