🧹 清除 PDF 元数据Remove PDF Metadata
彻底删除 PDF 的文档信息（标题、作者、主题、关键词、创建/修改工具、日期等整条删除，不是清空）以及目录和各页上的 XMP 元数据流。本地处理。Delete the PDF document info entirely (title, author, subject, keywords, creator, producer, dates and any custom keys are removed, not blanked) plus the XMP metadata streams on the catalog and pages. Processed locally.
使用说明与常见问题How-to & FAQ
「清除 PDF 元数据」是什么？What is the Remove PDF Metadata tool?
彻底删除 PDF 的文档信息（标题、作者、主题、关键词、创建/修改工具、日期等整条删除，不是清空）以及目录和各页上的 XMP 元数据流。本地处理。Delete the PDF document info entirely (title, author, subject, keywords, creator, producer, dates and any custom keys are removed, not blanked) plus the XMP metadata streams on the catalog and pages. Processed locally.
如何使用「清除 PDF 元数据」？How do I use the Remove PDF Metadata tool?
在「清除 PDF 元数据」中，选择或拖入文件，然后点击「清除元数据」按钮即可。加密的 PDF 会提示输入密码（出现「打开密码」栏和「打开」按钮），输入密码并点「打开」后再继续。In the Remove PDF Metadata: Choose or drop your files, then click "Clear metadata". For an encrypted PDF, the page asks for its password (a Password field and an Open button appear) — enter it, click Open, then continue.
删除了哪些？What is removed?
整条删除文档信息字典（Title、Author、Subject、Keywords、Creator、Producer、CreationDate、ModDate 及自定义键），不会把日期改成现在；同时删除目录和各页上的 XMP 元数据流。结果栏会列出删除的键。The whole document-info dictionary is deleted (Title, Author, Subject, Keywords, Creator, Producer, CreationDate, ModDate and custom keys) — dates are removed, not reset to now — along with the XMP metadata streams on the catalog and pages. The status line lists the removed keys.
还会留下什么？What can remain?
页面内容本身（文字、图片里的 EXIF）、附件、表单数据和书签不会改动；如需处理请用对应工具。Page content itself (text, EXIF inside images), attachments, form data and bookmarks are not changed; use the matching tools for those.
加密的 PDF？Encrypted PDFs?
会出现「打开密码」输入框，输入后点「打开」即可；输出文件不带打开密码。A Password field appears; enter it and click Open. The output is saved without the open password.
有哪些选项可以调整？What options can I adjust?
「清除 PDF 元数据」的设置：「打开密码」可留空；可选文件：PDF。每次生成结果都按当前设置处理。Settings in the Remove PDF Metadata — "Password" optional; files: PDF. The result always uses the current settings.
「清除 PDF 元数据」免费吗？需要注册吗？Is the Remove PDF Metadata free? Do I need an account?
「清除 PDF 元数据」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Remove PDF Metadata is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.