Sort lines alphabetically, by length, or reverse — with natural numeric order.
Sort a list of lines alphabetically (A→Z or Z→A), by length, or simply reverse it. Natural numeric order keeps item2 before item10. Optionally remove duplicates, trim whitespace, and drop blank lines in the same pass. Runs entirely in your browser.
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Plain alphabetical sorting compares character by character, so item10 lands before item2 because 1 precedes 2. Natural sort reads embedded numbers as numbers, producing the order a human expects. It is the difference between file lists that make sense and ones that look scrambled.
Yes, and it is the common workflow. Sorting groups identical entries together, and removing duplicates and blank lines at the same time turns a messy pasted list into something clean enough to import. Combining the steps also makes duplicates obvious, since they end up adjacent.
When length itself is the signal — finding suspiciously short entries in a data export, spotting truncated values, checking which headlines will fit a character limit, or ordering a list of options so the layout looks tidy. It is niche, but nothing else answers those questions as quickly.
Yes, Sort Lines is completely free. No signup, no account, and no watermark on outputs. A Pro tier is available for 100 AI ops/day and larger file sizes.
Sort Lines runs entirely in your browser. Your file is never uploaded — it is read, processed and saved locally, so it never reaches our servers or anyone else's. You can disconnect from the internet after the page loads and it still works.
Order
Natural (numeric) order: A plain sort treats text character-by-character, so "item10" lands before "item2". Natural order reads the numbers as numbers, giving the human-friendly item1, item2, … item10. It stays on by default.
Sort by length: Shortest- or longest-first ordering is handy for lining up code, spotting outliers, or arranging tags visually. Ties fall back to alphabetical order so the result is stable.
Clean up while sorting: Optionally remove duplicate lines, trim stray whitespace, and drop blank lines in the same pass — so you get a tidy, deduplicated list in one step.
Privacy: Runs on plain JavaScript in your browser. Your text is never sent anywhere, so it works offline and is safe for confidential lists.