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.

Is my data uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your input never leaves your device and nothing is logged or stored on our servers.

Does it work offline and on mobile?

Yes. Once the page has loaded it keeps working without a network connection, and the layout is responsive so it stays usable on phones and tablets.

Line Sorter & Deduper

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

Support

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.

Popular uses

sort lines
dedupe
remove duplicates
line filter
text tool

Examples

Dedupe list

apple
banana
apple

Output

apple
banana

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

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Works well with

Next steps from other categories.

Remove Duplicate Lines

Text & String

Deduplicate lines of text with flexible matching.

Sort Lines

Text & String

Sort lines alphabetically, numerically, or by length.

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Frequently asked questions

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