What this tool does
Duplicate Line Remover cleans lists by removing repeated lines while optionally preserving order.
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🧹 Duplicate Line Remover
Deduplicate URLs, IDs, keywords, logs, or pasted lists with explicit case, trim, sort, and empty-line options.
Duplicate removal checks
Reports total lines, unique output lines, duplicate count, and the exact normalization options used to compare values.
Why it is useful
It is useful for deduping URLs, keywords, emails, IDs, logs, product lists, and pasted spreadsheet values.
How it works
The browser splits input into lines, compares each line using the selected options, and outputs a cleaned list.
Best input
Paste one item per line for the most predictable results.
Cleanup tip
Normalize capitalization and whitespace first when duplicates differ only by formatting.
Privacy note
Line cleanup happens locally in your browser.
Important limitation
Exact duplicate detection may not catch values that differ by punctuation, invisible characters, or formatting unless normalized.
Quick answers
Can it preserve order?
Yes. Leave sorting off to keep the first occurrence order.
Can it sort too?
Yes, but use Sort Lines when ordering is the primary task.
Common Use Cases
Clean duplicate URLs or IDs
Remove repeated lines from crawls, exports, keyword lists, or generated IDs.
Deduplicate copied spreadsheet values
Paste one item per line and keep only the first occurrence.
Prepare cleaner debugging artifacts
Condense repeated log snippets or error lines before sharing.
Text Cleanup Toolkit workflow
Clean pasted text, normalize whitespace, remove blank or duplicate lines, sort lists, convert case, generate slugs, and compare short edits locally in the browser.