🏷️ PDF 元数据编辑Edit PDF Metadata
查看和修改 PDF 的标题、作者、主题、关键词、创建程序、生成器和创建/修改时间，支持中文；也可一键清除全部元数据（包括 XMP），发布文件前保护隐私。View and edit a PDF's title, author, subject, keywords, creator, producer and creation/modification dates (Unicode supported), or strip all metadata including XMP in one click to protect privacy before sharing.
使用说明与常见问题How-to & FAQ
「PDF 元数据编辑」是什么？What is the Edit PDF Metadata tool?
查看和修改 PDF 的标题、作者、主题、关键词、创建程序、生成器和创建/修改时间，支持中文；也可一键清除全部元数据（包括 XMP），发布文件前保护隐私。View and edit a PDF's title, author, subject, keywords, creator, producer and creation/modification dates (Unicode supported), or strip all metadata including XMP in one click to protect privacy before sharing.
如何使用「PDF 元数据编辑」？How do I use the Edit PDF Metadata tool?
在「PDF 元数据编辑」中，按需设置「标题」、「作者」、「主题」、「关键词」、「创建程序」等选项，然后点击「保存修改」、「清除全部元数据」按钮即可。支持拖放文件。加密的 PDF 选好后会先出现「打开密码」栏和「打开」按钮，输入密码点「打开」后再继续。In the Edit PDF Metadata: Set "Title", "Author", "Subject", "Keywords", "Creator", then click "Save changes", "Remove all metadata". Drag-and-drop files is supported. For an encrypted PDF, a Password field and an Open button appear after you choose it — enter the password and click Open first.
PDF 元数据有哪些？What metadata does a PDF have?
文档信息字典里通常有标题、作者、主题、关键词、创建程序、PDF 生成器以及创建和修改时间；很多文件还带有 XMP 元数据（XML 格式），Acrobat 等软件会优先读取它。The document information dictionary usually holds title, author, subject, keywords, creator application, PDF producer and creation/modification dates; many files also carry XMP metadata (XML), which Acrobat and others prefer.
为什么建议删除 XMP？Why delete XMP?
本工具编辑的是文档信息字典。如果旧的 XMP 还在，部分阅读器可能继续显示旧标题或作者，删除 XMP 可以避免新旧信息不一致。This tool edits the information dictionary. If old XMP remains, some viewers may still show the old title or author, so deleting XMP avoids conflicting information.
清除元数据能完全匿名吗？Does removing metadata make the file anonymous?
它会删除文档信息和 XMP，但页面内容、批注作者名、嵌入的图片 EXIF、表单等仍可能包含个人信息，发布敏感文件前请一并检查。It deletes the information dictionary and XMP, but page content, annotation author names, EXIF in embedded images and form data may still contain personal information — check these too before publishing sensitive files.
加密的 PDF 可以处理吗？Can it handle password-protected PDFs?
可以。如果 PDF 需要打开密码，会提示你输入；只有权限限制（无打开密码）的文件会自动打开。输出文件不再带密码，如需加密请使用“PDF 加密”工具。Yes. If the PDF needs an open password you'll be asked for it; files with only permission restrictions open automatically. The output is not password-protected — use the Protect PDF tool if needed.
文件会上传到服务器吗？Are my files uploaded?
不会。PDF 在你的浏览器里用 pdf-lib / pdf.js 处理，文件不会离开你的设备，关闭页面后不留存任何数据。No. The PDF is processed in your browser with pdf-lib / pdf.js; files never leave your device and nothing is kept after you close the page.
「PDF 元数据编辑」免费吗？需要注册吗？Is the Edit PDF Metadata free? Do I need an account?
「PDF 元数据编辑」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 Edit 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.