Sort Lines Alphabetically

Paste a list, pick a direction, and the lines come back in order. No page reload, no upload, no waiting.

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Natural order treats digit runs as numbers, so chapter 2 lands before chapter 10 instead of after it. Turn it off if you want strict character-by-character sorting.
Ignore case compares letters without caring about capitals, so Apple and apple sit next to each other. Lines that compare equal keep their original relative order.