Duplicate Line Remover
Paste your text below. Repeated lines are removed automatically as you type, and a count of how many duplicates were eliminated is shown.
About this tool
The Duplicate Line Remover is a fast, browser-based utility for stripping repeated lines from any block of text. Data analysts use it to clean exported CSV columns and remove repeated header rows. Email marketers paste mailing lists through it to eliminate duplicate addresses before a campaign. Developers rely on it to tidy log files and configuration outputs where the same error or entry may appear hundreds of times. Writers and editors use it to consolidate notes and remove accidentally duplicated passages. Students clean up copied research snippets before submitting assignments. Because everything runs inside your browser on the client side, no text is ever uploaded to a server or stored — your data stays private and is gone as soon as you close the tab.
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