All text tools
Remove Duplicate Lines
Deduplicate a list of emails, URLs, IDs or anything else one item per line — or flip it round and see only the entries that repeat.
Your list
0 words · 0 characters
Result
0 words · 0 characters
What to keep
Every line survives once, in its original order.
Matching rules
Lines in
0
Lines out
0
Removed
0
Comparison happens on a normalised copy of each line, so trimming and case-insensitivity change what counts as a duplicate without changing the lines you get back — unless you ask for them to be trimmed too.