合并PDF拆分PDF压缩PDF

添加水印

向PDF文件添加文本或图像水印。

或将PDF文件拖放到这里

等约统计四统计不发软为一维管理器
有可代理中国统计很统计为索引统计为索引统计

完整指南:添加水印

Adding a watermark to your PDF documents serves multiple purposes: protecting intellectual property, indicating document status (draft, confidential, approved), branding company materials, or deterring unauthorized distribution. iLoveDoc's Add Watermark tool lets you overlay text or image watermarks across all pages of your PDF with precise control over opacity, rotation, position, size, and color. Text watermarks are commonly used for status indicators like "DRAFT," "CONFIDENTIAL," or "SAMPLE," while image watermarks are ideal for company logos and branding. You can adjust the transparency so the watermark is visible but doesn't interfere with document readability. The watermark is applied consistently across all pages or just selected pages, and it becomes a permanent part of the PDF. All processing is done locally in your browser for complete security.

如何使用 添加水印

  1. 1Upload the PDF you want to watermark.
  2. 2Choose watermark type: text or image. For text, enter your watermark text (e.g., "CONFIDENTIAL").
  3. 3Adjust watermark properties: opacity, rotation angle, size, color, and position on the page.
  4. 4Preview the watermark on your document to verify placement and visibility.
  5. 5Click "Add Watermark" to apply it across your document and download the watermarked PDF.

添加水印 使用场景

Document Status

Mark documents as "DRAFT," "CONFIDENTIAL," or "APPROVED" to clearly indicate their status and handling requirements.

Brand Protection

Add company logos to proposals, reports, and marketing materials to reinforce brand identity and prevent unauthorized reuse.

Copyright Protection

Watermark photographs, designs, and creative works shared as PDFs to deter unauthorized copying and distribution.

为什么在 iLoveDoc 上使用 添加水印?

🔒

您的文件完全在浏览器中处理。它们永远不会上传到我们的服务器,保证了绝对的机密性和数据保护。

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添加水印 完全免费使用,无需注册,也没有文件大小限制。您可以根据需要多次使用。

得益于我们的本地浏览器技术,处理是即时的。无需等待,没有队列,没有服务器延迟。

关于 添加水印 的常见问题

Can I add both text and image watermarks?

You can add either a text watermark or an image watermark. To combine both, apply one type first, then apply the other on the resulting file.

Can I control the transparency?

Yes. You can adjust the opacity from nearly invisible to fully opaque. A typical transparency of 20-30% works well for most watermarks.

Can I watermark only specific pages?

Yes. You can choose to watermark all pages or select specific pages for the watermark.

Can the watermark be removed after application?

Once applied, the watermark becomes a permanent part of the PDF and cannot be easily removed. This is by design for document protection.

What image formats are supported for watermarks?

Common image formats like PNG (with transparency support), JPG, and SVG can be used as watermark images.