The Duplicate Line Remover cleans up text that contains repeated lines, which is common when merging logs, copying lists, or combining data from multiple sources. Manually spotting and deleting duplicates in a long list is slow and error prone. This tool automates the process so you can keep only unique lines in a few seconds.

You can paste any block of line-based text, such as lists of email addresses, URLs, names, or IDs. The tool scans each line and removes repeats, preserving the first occurrence by default. The result is a tidy set of unique entries that you can copy and reuse. This is especially helpful for developers, marketers, analysts, and anyone who works with raw data or text exports.

All processing happens locally in your browser. Your content is not uploaded or stored, which makes it safe for internal lists and test data. By simplifying a common clean-up task, the Duplicate Line Remover saves time and reduces the risk of leaving stray duplicates behind.