从 AI 对话、网页或文档里复制出来的文本常藏着零宽字符等看不见的「脏东西」，粘贴到别处就会排版错乱、搜索不到。这个工具一键清掉隐藏字符、多余空行和行尾空格，还能去 Markdown 标记、统一引号和全半角。Text copied from AI chats, web pages and documents often hides zero-width and other invisible characters that break layouts and search. This tool strips hidden characters, extra blank lines and trailing spaces, and can remove Markdown marks and normalize quotes and character width.
零宽字符（U+200B 等）肉眼看不见，但会让两个看起来一样的词在电脑眼里完全不同——搜索、查重、代码粘贴都会中招。发文章、交作业、提交文案前清一遍最稳妥。Zero-width characters (like U+200B) are invisible, yet they make two identical-looking words completely different to a computer — breaking search, plagiarism checks and code pastes. Cleaning before you publish or submit is the safe habit.