Remove duplicate lines: how it works

Paste your list (phone numbers, emails, names, keywords…) and press Remove duplicate lines. Matching ignores capital letters and extra spaces, so "Ali" and "ali " count as the same. You can also sort the list and remove empty lines.

Does it keep the first copy?

Yes. The first time a line appears it stays in place; later copies are removed.

Can I clean a WhatsApp contact list?

Yes. Paste the numbers one per line and remove the duplicates. Use Remove extra spaces first if the numbers have spaces.

What this text cleaner does

Fix broken lines: text copied from a PDF often has a line break in the middle of every sentence. This joins them back into proper paragraphs.
Change case: turn ALL CAPS text into normal sentences, or make headings Title Case.
Lists: remove repeated names or numbers, sort a list alphabetically, or number it.

Questions

I made a mistake. Can I go back?

Yes, press Undo. It remembers your last 20 changes.

Is my text sent anywhere?

No. Everything happens in your browser.