Remove Duplicate Lines From a List
Paste a list of emails, IDs, URLs or keywords and every repeated line is removed, keeping the first occurrence in place. It is the fastest way to clean an export before importing it somewhere else.
Runs in your browser — your text is never uploaded or stored.
List with duplicates
Deduplicated list
How to Use
- 1.Paste your list, one item per line.
- 2.Duplicates are removed and the original order preserved.
- 3.Copy the clean list into your CRM, mail tool or query.
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FAQ
Is the comparison case sensitive?
This variant compares exactly. Open the full dedupe tool to enable case-insensitive matching.
Is my contact list uploaded?
Everything runs locally in your browser with JavaScript — nothing is uploaded, logged or stored. Nothing leaves your device, which matters for customer data.
Need more options?
Remove Duplicate Lines
Paste any list to instantly remove duplicate lines with an optional case-insensitive mode. Free, private and runs 100% in your browser.