Does sorting consider letter case?

By default sorting is case-sensitive, so uppercase letters sort before lowercase ones. Enable "Case-insensitive" to sort without regard to case.

Can I remove duplicate lines and sort at the same time?

Yes. Deduplication runs before sorting, so the result is both duplicate-free and ordered the way you chose.

Only if you enable "Remove blank lines." Otherwise blank lines are kept and sorted like any other line.

Text Tools

Sort lines alphabetically or by length, remove duplicates and blank lines. Everything runs locally in your browser.

Sort order

Case-insensitive Trim whitespace Remove blank lines Remove duplicate lines