删除重复行

免费的重复行删除工具。从任何文本中删除重复行，并保留原始顺序。可选不区分大小写和去除空格。完全在浏览器中运行。

Runs in your browserUpdated Apr 26, 2026

Case-insensitive Trim whitespace Keep empty linesRemoved: 0

常见问题

›Is the original order preserved?

Yes — we keep the first occurrence of each line and remove subsequent duplicates.

›Is it case-sensitive?

Default is case-insensitive. Toggle for case-sensitive matching.

›Does it ignore whitespace?

Optional — toggle 'trim whitespace' to ignore leading/trailing spaces when comparing.

›Is my text uploaded?

No — runs entirely in your browser.

›Is the tool free?

Yes — fully free, no signup.