Sort & Dedupe Lines

This tool sorts a list of lines alphabetically and removes duplicates and blank lines — a routine cleanup that's slow and error-prone to do by hand.

How to use it

• Paste text (one value per line) and sorting and deduplication happen instantly.
• Pick an order (ascending, descending, or natural) depending on the kind of data.
• Turn on removal of blank lines and extra whitespace to get a clean result in one pass.

Common uses

• Turning a list of email addresses or usernames into a unique, sorted list before importing it.
• Sorting a list of files or versions with numeric parts in natural order (file2 before file10).
• Quickly cleaning up a list copied from a spreadsheet or document, removing duplicates and stray blank lines.

Things to keep in mind

Plain alphabetical sorting puts "file10" before "file2", since it compares strings character by character — natural sort is needed for the expected order with numbers.

Duplicate removal is case-sensitive by default — "Text" and "text" count as different lines unless the text is normalized to one case first.