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Paste the list and repeats disappear as you type — the first copy of each line stays, the rest go, and the counts show how many were dropped. Matching is exact, so tick trim and collapse-spaces to catch lines that differ only by stray spacing. Nothing leaves your browser.
Clean up
Find & replace
Paste or type — the cleaned version updates as you go.
Whatever you tick, the operations run in one fixed order: find & replace, strip special characters, trim, collapse spaces, remove empty lines (blank or whitespace-only), remove duplicates, sort, then join lines with a single space. Line endings come out as Unix (LF).
Stripping keeps letters (accents included), digits, spaces and . , ; : ! ? ' " ( ) - _ / @ & + = % # — curly quotes and long dashes become their plain equivalents; everything else goes. Duplicate removal matches lines exactly. Everything runs in this tab; nothing is uploaded.
Paste into the editor or open a file — everything you add stays in this tab, and you see exactly what the tool will work on before anything runs.
Your browser does all the work locally. Nothing is uploaded — what you paste never leaves this tab, so there’s nothing for anyone to store, scan, or leak.
Take the result to your clipboard, or save it as a file. Close the tab and nothing of what you pasted remains.