查看元数据 · Metadata查看 PDF 文档属性

如何用 PDFnoted 查看PDF元数据（标题、作者、关键词）

场景：查看 PDF 文档属性 / View PDF document properties

PDF文件常隐藏着重要信息：作者名、修改时间、关键词甚至公司机密。但多数人不知道如何快速查看——打开Adobe Acrobat太重，命令行又太难。本文教你用轻量工具PDFnoted，3步免费读取完整元数据。

PDFs often hide critical info: author name, edit time, keywords—or even confidential metadata. Yet most users don’t know how to check it easily. Acrobat is heavy; command-line tools are complex. This guide shows you how to view full PDF metadata in 3 simple steps using PDFnoted—free, lightweight, and cross-platform.

立即使用查看元数据 → Use Metadata →

1. 步骤1：下载并打开 PDFnoted

访问 PDFnoted 官网（pdfnoted.com），下载适用于 Windows 或 macOS 的最新版安装包。安装后双击启动，界面简洁无广告，无需注册或联网即可使用。

2. 步骤2：拖入PDF文件查看元数据

直接将目标PDF文件拖拽到 PDFnoted 主窗口中，或点击「Open File」选择文件。几秒内，右侧面板自动显示完整元数据：包括标题（Title）、作者（Author）、主题（Subject）、关键词（Keywords）、创建/修改时间、PDF版本及生成软件（Producer）。

3. 步骤3：复制或导出元数据用于归档

点击元数据区域右上角的「Copy All」按钮，一键复制全部字段（含格式化换行），可粘贴至Excel或文档做审计记录；如需长期存档，点击「Export as TXT」生成标准文本报告，便于团队共享与合规审查。

1. Step 1: Download and Launch PDFnoted

Go to pdfnoted.com, download the latest version for Windows or macOS. Install it, then launch—no sign-up, no internet required. The clean interface loads instantly.

2. Step 2: Drag & Drop Your PDF to View Metadata

Drag your PDF file into the PDFnoted window—or click 'Open File' to browse. Within seconds, the right panel displays full metadata: Title, Author, Subject, Keywords, Creation/Modification dates, PDF version, and Producer software.

3. Step 3: Copy or Export Metadata for Record-Keeping

Click 'Copy All' (top-right of metadata panel) to copy all fields—formatted with line breaks—into Excel or reports. For long-term archiving, use 'Export as TXT' to generate a plain-text audit log compatible with compliance workflows.

小贴士：小贴士：批量检查多个PDF？PDFnoted 支持多文件拖入，一次加载后点击标签页切换查看；另建议定期用它筛查对外发送PDF是否意外泄露内部作者名或路径信息。

Tips: Pro tip: To check multiple PDFs at once, drag them all into PDFnoted—it opens each in a separate tab. Also, use it before sharing PDFs externally to catch accidental leaks like internal author names or file paths in metadata.

常见问题

FAQ

PDFnoted 能查看加密PDF的元数据吗？

可以——只要PDF仅设“打开密码”（即需输入密码才能打开），PDFnoted 在输入正确密码后仍能正常读取元数据；但若设置了“权限密码”（禁止复制/打印），部分字段可能被PDF生成器主动清除，此时显示为空。

为什么有些PDF显示‘Unknown’或空白作者/标题？

这通常表示该PDF在生成时未填写文档属性（例如由截图转PDF、扫描件或简易导出工具生成）。PDFnoted 如实反映原始数据，并非工具故障；建议用PDF编辑器补全元数据以提升文件管理效率。

PDFnoted 是否会上传我的文件到云端？

不会。PDFnoted 是纯本地运行的桌面应用，所有元数据解析均在您的设备上完成，不联网、不上传、不追踪。敏感文档（如合同、财报）可完全离线安全使用。

Can PDFnoted read metadata from password-protected PDFs?

Yes—if the PDF only has an 'open password', PDFnoted can read metadata after you enter it. However, if a 'permissions password' (e.g., disabling copying) is set, some metadata may be intentionally stripped by the creator and appear blank.

Why do some PDFs show 'Unknown' or blank Author/Title?

This means the PDF was generated without embedded properties—common with screenshots, scans, or basic export tools. PDFnoted displays what’s actually in the file; it’s not a bug. We recommend adding metadata later via a PDF editor to improve searchability and compliance.

Does PDFnoted upload my files to the cloud?

No. PDFnoted runs entirely offline—metadata parsing happens locally on your device. It never connects to the internet, uploads files, or collects usage data. Ideal for confidential documents like contracts or financial reports.

相关工具：Related tools: AI 智能脱敏 / AI Redact

本文为 PDFnoted 原创使用指南，介绍如何用本工具完成该场景。访问查看元数据立即体验。

This is an original PDFnoted guide on completing this scenario with our tool. Try Metadata.