PDF 水印
在 PDF 的每一页添加文字水印
Source PDF
No PDF selected yet. Build the watermark recipe first, then upload once.
上传一个 PDF 文件
拖放即可开始，或使用文件选择器。
Preview, thumbnails, and page range controls appear here after the PDF is added.
Mark
文字
Text watermark
Mode
Single
30% opacity
Pages
All
Page range after upload
Output
New PDF
Original stays safe
使用方法
上传您的文件
拖放文件或点击浏览。您的文件留在浏览器中。
调整设置
配置选项以获得您所需的精确结果。
下载结果
即时处理并下载您的文件——无需等待，无需上传至服务器。
为什么使用此工具
100% 免费
核心工具可免费使用；AI 及云端工具可能设有每日用量限制。
无需安装
完全在浏览器中运行。无需下载或安装任何软件。
隐私且安全
本地工具把输入留在设备；需要传送数据的工具会清楚标示。
支持移动设备
完全响应式设计——在手机、平板或桌面电脑上均可使用。
您的文件保持私密
此工具完全在您的浏览器中处理文件。不会上传至任何服务器——您的数据永远不会离开您的设备。
- 无服务器上传——100% 客户端处理
- 不存储数据——关闭标签页时文件即被丢弃
- 无需账号——无需注册即可立即使用
How to Add Watermarks to PDFs: Protect Your Documents
Key Points
- Text or image watermarks can be applied across all pages or selected pages
- Semi-transparent watermarks protect ownership without obscuring content
- Common watermarks include 'DRAFT', 'CONFIDENTIAL', company logos, and copyright notices
Watermarks serve as a visible indicator of document status, ownership, or confidentiality. Adding a watermark to your PDF helps protect intellectual property, indicate draft status, or brand documents with your logo—all while keeping the underlying content fully readable.
85%
Of businesses use document watermarks
Common Use Cases
Mark Drafts & Versions
Stamp 'DRAFT' or 'FOR REVIEW' on documents shared for feedback, making it clear the content is not final and preventing premature distribution.
Protect Confidential Documents
Add 'CONFIDENTIAL' or 'INTERNAL USE ONLY' watermarks to sensitive reports, financial data, or HR documents to indicate restricted distribution.
Brand Documents with Logo
Place your company logo as a subtle background watermark on proposals, invoices, or white papers for professional branding.
Copyright Protection
Add copyright notices to photography portfolios, design proofs, or written works shared for preview to discourage unauthorized use.
Watermark Tips
Use 20-40% opacity for text watermarks—visible enough to deter misuse but transparent enough to read content below.
Diagonal placement (45°) is the most common and effective watermark orientation.
For logo watermarks, use a PNG with transparency for a clean, professional appearance.
Gray or light-colored watermarks work best—dark watermarks can make text hard to read.
Watermarks are added locally in your browser. No documents are uploaded to any server. Note that watermarks are a visual deterrent and can be removed by someone with PDF editing tools.