Is Duplicate Line Remover free to use?

Yes, Duplicate Line Remover is completely free. No registration, no account, and no hidden costs — ever.

Is my data safe when using Duplicate Line Remover?

All processing happens directly in your browser. Your data never leaves your device — nothing is uploaded or stored on our servers.

No. All CheckTown tools work instantly without registration or sign-up.

Duplicate Line Remover works on any device — desktop, tablet, or phone. The interface adapts to your screen size.

实时删除文本中的重复行。粘贴文本即可立即查看去重后的唯一行。

区分大小写

去除首尾空白

保留首次出现

对结果排序

忽略空行

在上方粘贴文本以删除重复行

输入时唯一行会自动显示

Ctrl+Enter 运行Ctrl+Shift+C 复制

了解如何从文本、日志和数据导出中删除重复行，获得干净、去重的内容。

什么是重复行删除？

重复行删除会逐行扫描文本并剔除重复的行，只保留唯一的条目。在处理日志文件、数据导出、邮件列表或任何重复只会增添噪音而无价值的文本时，这项功能必不可少。