添加水印
为 PDF 添加文字、图片或平铺水印。
About Insert Watermark
How PDF Watermarking Works
A watermark is a semi-transparent overlay placed on your PDF pages. It can be text (“CONFIDENTIAL”, “DRAFT”), an image (a company logo), or a repeating pattern that tiles across the entire page.
OxygenPDF applies watermarks directly in your browser. Pick a type, adjust the settings, preview the result on your actual pages, then apply. The watermarked PDF downloads to your device. Nothing gets uploaded.
Common Reasons to Watermark PDFs
Watermarks serve a practical purpose. They mark document status, establish ownership, or discourage unauthorized distribution.
Protect Intellectual Property
Overlay your company logo or copyright notice on reports, proposals, and creative work before sharing externally.
Mark Document Status
DRAFT, CONFIDENTIAL, FOR REVIEW, APPROVED — text watermarks make a document’s status immediately visible on every page.
Legal & Compliance
Court filings and regulated documents often require visible markings. Watermarks satisfy the requirement without obscuring content.
Brand Documents
Place a logo watermark on client-facing materials. Adjust opacity so it’s visible without competing with the actual content.
Three Watermark Types: Text, Image, and Pattern
Text watermarks let you type any message and control font, size, color, opacity, and rotation. Image watermarks accept a logo or graphic — upload it, set the size and transparency, and position it on the page. Pattern watermarks tile your text across every page in a repeating grid with configurable spacing.
Each type supports nine position presets (center, corners, edges, diagonal) plus custom placement. You can save watermark configurations as presets for reuse, and apply different watermarks to different pages using per-page overrides.
How It Compares
Most PDF tools offer basic text watermarks. The range of options and the live preview vary significantly.
| 功能特性 | OxygenPDF | Adobe Acrobat | iLovePDF |
|---|---|---|---|
| Text watermarks | |||
| Image watermarks | |||
| Repeating pattern watermarks | |||
| Per-page watermark overrides | |||
| Saveable presets | |||
| Live preview on actual pages | Desktop only | ||
| No file upload required | Desktop only | ||
| Free to use | Limited |
Your Documents Stay Private
Documents that need watermarking are usually the ones you’d rather not upload anywhere: contracts before signing, financial reports under review, internal presentations with proprietary data.
OxygenPDF renders watermarks locally in your browser. Your PDF stays on your machine. The watermarked output downloads directly. Close the tab and nothing remains.
添加水印: 常见问题解答
关于此工具及其工作原理的常见问题。
Pro
$9 一次性付费