Remove Duplicate Lines
Delete repeated lines from a list and keep only unique entries. 100% in your browser.
Merged lists almost always contain repeats. Remove Duplicate Lines scans your text and keeps only the unique lines, so an email list, keyword set or any list is cleaned of repetition in one step.
How to use remove duplicate lines
- 1. Paste your list, one entry per line.
- 2. Duplicate lines are detected and removed.
- 3. Copy the de-duplicated list.
When to use Remove Duplicate Lines
Clean a merged list
Remove repeats after combining lists from several sources.
Unique email or keyword set
Strip duplicate addresses or keywords down to one of each.
Tidy data
Get a clean set of unique values from a pasted column.
Frequently asked questions
Does it keep the first occurrence?
Yes — the first time a line appears is kept, and later identical lines are removed.
Are near-duplicates removed too?
Only exact duplicate lines are removed. Lines differing by spacing or case count as different — clean them first if needed.
Is my text private?
Yes — everything runs in your browser.