Remove duplicate lines from any text instantly while preserving original order. Free online dedupe tool with case-sensitivity and trim options.
The Tooloogle Duplicate Line Remover strips repeated lines from any text block, keeping the first occurrence and preserving original order. Useful for cleaning email lists, log files, URL collections, and CSV columns where duplicates inflate the data without adding value.
Preserve original order — first occurrence stays in place; subsequent duplicates are removed.
Case-sensitive or case-insensitive — treat Email and email as the same line or different ones.
Trim whitespace — ignore leading and trailing spaces when comparing (so " foo" and "foo" dedupe).
Remove blank lines — optionally strip empty lines as well.
Sort option — alphabetise output if you also want a sorted, unique list.
Duplicate count — reports how many lines were removed and how many unique lines remain.
Paste your text into the input box.
Toggle case sensitivity, trim, and blank-line options as needed.
Click Remove Duplicates — the cleaned list appears instantly with statistics.
Copy or download the result.
Cleaning email subscriber lists before import. Deduplicating URL collections from web scrapes. Removing repeated log lines for analysis. Cleaning CSV columns pasted from spreadsheets. Tidying configuration files (hosts, gitignore patterns). Preparing word lists for puzzles or NLP tasks.
Deduplication happens entirely in your browser. Your text — which often contains email addresses or other personal data — is never uploaded or logged.
How to Use Duplicate Line Remover - Clean Text & Keep Order Online
Paste your text or list of lines into the input box.
Checked (ON): Removes only exact duplicates (case and punctuation must match). Unchecked (OFF): Removes duplicates even if case differs (Hello, hello, HELLO → 1 left).
The tool instantly processes and keeps only unique lines while preserving the original order.
Use the Copy Results button to copy cleaned text and use it anywhere.
Remove duplicate lines from any text instantly while preserving original order. Free online dedupe tool with case-sensitivity and trim options.
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