One list.
No repeat entries.
Remove repeated lines from emails, URLs or keywords while preserving the order of the first occurrence.
Duplicate Line Remover
Processed in your browserOne less thing
to fiddle with.
Combining lists often introduces repeats. This tool keeps the first occurrence and removes later matching lines. It never sorts your entries. Comparison options let you match case-insensitively or ignore surrounding whitespace, while retaining the original spelling and spacing of the first kept line.
- Paste one entry per line.
- Choose whether case, surrounding spaces and blank lines should matter.
- Remove duplicates, inspect the counts and copy your cleaned list.
Small questions.
Clear answers.
Does it keep my list in order?
Yes. The first occurrence stays in its original position. Later duplicates are removed.
Are Apple and apple treated as duplicates?
Only when “Ignore letter case” is checked. Leave it unchecked for exact case-sensitive comparison.
Does ignoring whitespace change the output?
No. It only changes how duplicates are compared. The first kept line retains its original surrounding spaces.
Does it validate email addresses?
No. It compares whole lines as text. It does not check deliverability, normalize addresses or contact anyone.
Are my files or text uploaded?
No. The tool processes your input in this browser and does not send it to our server or save it in persistent browser storage. The website host still receives normal page requests. See our privacy notice for details.