Free Duplicate Lines Remover
Runs locallyUpdated October 25, 2026
Remove duplicate lines from keyword exports, URL lists, and log files locally in your browser while preserving the first occurrence order.
How to use Duplicate Lines Remover
Paste your line-separated list (keywords, URLs, tags, or rows) into the input field.
Configure case sensitivity and line-trimming options as needed.
Copy the deduplicated list into your spreadsheet, XML sitemap generator, or script.
Deduplicate keyword exports and URL lists locally
Merging keyword lists from Search Console, combining backlink exports, or assembling URLs for a sitemap almost always introduces duplicate rows. Paste your list into this free duplicate lines remover to strip repeated lines in your browser.
Common SEO & data cleanup workflows
| Input Dataset | Recommended Settings | Next Step After Deduplication |
|---|---|---|
| Canonical URL List for Sitemap | Trim whitespace ON, Case-sensitive OFF | Paste clean URLs into the XML Sitemap Generator |
| GSC / Keyword Research Exports | Trim whitespace ON, Case-sensitive OFF | Group into topic clusters and check Title Tag Length |
| Redirect Mapping Paths | Trim whitespace ON, Case-sensitive ON | Generate rules in the .htaccess Redirect Generator |
If your text also contains erratic internal spacing or extra blank paragraphs, run it through the whitespace remover.
Duplicate Lines Remover FAQs
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