Remove Duplicate Lines

Clean up lists, exports and text dumps by removing duplicate lines, with optional trimming, empty-line removal and alphabetical sorting.

Your Text

Lines to deduplicate

Trim whitespace Remove empty lines Case-insensitive Sort A-Z

Cleaned Result

How It Works

The text is split into individual lines. Optional rules are applied first: trimming whitespace and dropping empty lines.

Then each line is compared against the lines already kept. When the case-insensitive option is on, lines that differ only by capitalization are treated as duplicates and the first occurrence wins.

Finally, the surviving lines can be sorted alphabetically with the A-Z option.

Frequently Asked Questions (FAQ)

This Remove Duplicate Lines processes text and inputs instantly using client-side JavaScript algorithms.

No. Your text never leaves your browser window and is cleared as soon as you close or refresh the tab.

Disclaimer Notice

General Disclaimer: This utility is provided as-is for productivity and content editing. Results should be reviewed for accuracy.