Can I filter lines with a regex?

Yes, use the include and exclude regex fields to keep or drop matching lines.

Is deduplication case-sensitive?

By default yes; enable the case-insensitive option to treat different casing as duplicates.

Can I download the result?

Yes, use the Download button on the output panel.

Line Sorter & Deduper

Sort, dedupe, and filter lines with regex include/exclude.

Works Offline

Privacy First

No Login

No API

Sort

Include (regex)

Exclude (regex)

Dedupe

Case-insensitive

Trim

Remove empty

Input

7 lines

Output

5 lines

Out

apple
banana
Banana
cherry
date

About the Line Sorter & Deduper

Clean up lists of lines: sort alphabetically or by length, remove duplicates (optionally case-insensitive), trim whitespace, drop empty lines, and filter with include/exclude regular expressions.

Examples

Dedupe list

apple
banana
apple

Output

apple
banana

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Frequently asked questions

Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser