Sort Lists & Remove Duplicate Lines

Sort lists alphabetically or naturally, remove duplicates with explicit rules and preserve the spelling of retained entries.

Processed on your deviceFree · No account needed

Your list

Up to 100,000 UTF-16 characters per input; processing runs in a browser worker. No input text is uploaded or saved by this tool.

OrderWhitespace handling

Input separatorOutput separator

Remove duplicate entries; keep the first spellingIgnore case when finding duplicatesRemove blank entries

Up to 10,000 entries. Sorting follows the current page language; equal sort keys keep their original order. Separators are literal: this is not a quoted CSV importer. A trailing separator creates a blank entry.

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How to use it

Paste a list and choose input and output separators.
Select ordering and duplicate matching separately, including case and whitespace rules.
Review retained entries and counts, then copy or download TXT.

Natural sorting puts “Item 2” before “Item 10”. Treating “Anna” and “anna” as duplicates is a separate choice.

Details & limits

Delimited plain text, not CSV import. Sorting and duplicate matching are separate options; processing is bounded.

Does removing duplicates change retained spelling?

No. The first retained entry keeps its spelling unless you explicitly choose text trimming. Equality rules do not silently rewrite source values. Delimiter mode is plain-text splitting, not quoted CSV parsing.

How to use it

Details & limits

How this tool works

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