♻️Remove Duplicate Lines / Unique
Remove duplicate lines from multi-line text. Case-insensitive, whitespace-ignore, and empty-line options. Useful for deduping email lists, data cleansing, word dictionary cleanup, log analysis, and removing duplicate URLs.
How to use
- 1Enter your text.
- 2Choose options (case/whitespace ignore).
- 3Copy the result.
FAQ
Is line order preserved?+
Yes. The first occurrence order from the original is kept. For sorting, chain with the Text Sort tool.
How does this compare to Excel's Remove Duplicates?+
Same behavior, but with handy options (case/whitespace ignore). Faster for quick jobs.
Are 'a@x.com' and 'A@X.com' treated as the same?+
Turn on case-insensitive option and they're recognized as the same email — only one kept.
Are blank lines removed too?+
Optionally remove all empty lines at once — useful when tidying data.
Can multiple words be on one line?+
This tool compares by line. If a line has multiple words, the whole line must match to count as a duplicate.
Can I use this for Excel lists?+
Copy a single Excel column and paste it in. The result can be pasted back to Excel cleanly.