Remove Duplicate Lines
Result updates live as you type or adjust settings
Sort & Deduplicate a List of Lines
This tool takes a long list-style block of text — one item per line, like an email list, keyword list, or exported data — and removes every line that's an exact duplicate, keeping the first occurrence of each one. You can also sort the result alphabetically, ignore letter case when comparing lines, trim stray whitespace, and drop empty lines, all at once. All processing happens locally in your browser; your text is never uploaded to a server.