在线处理 · 文件自动清理
Add text or image watermarks to PDF with single or mixed modes, opacity control, and preview
水印类型
模式
自定义参数
文字颜色
#0F766E
字体
字体样式
重复铺满
水平位置 50%
垂直位置 50%
效果预览
模拟正文
直接配置
混合模式
支持微调
These FAQs cover online PDF watermark creation, text and image watermarks, previewing, batch work, and file cleanup.
It supports text watermarks and image watermarks. Text watermarks can be customized by content, color, size, opacity, position, rotation, and style; image watermarks are useful for logos, seals, and brand marks.
Use text watermarks for company names, internal labels, draft marks, and document IDs. Use image watermarks when you need a logo, seal, QR code, or fixed graphic.
Single mode adds only the main watermark layer from the current settings. Mixed mode adds an extra supporting watermark layer with the same settings, making the watermark more visible and harder to remove directly.
Yes. After adjusting the watermark type, settings, and asset, the page shows a simulated preview so you can check content, position, opacity, rotation, and tiling before generating the new PDF.
The PDF is uploaded to the server to generate a new watermarked file. Files are automatically cleaned according to site policy after processing, so avoid uploading highly sensitive documents unsuitable for online handling.
The online page is best for adding watermarks to one PDF quickly. For frequent large-file work or batch PDF watermarking, use the desktop PDF toolbox.
No. The service generates a new watermarked PDF from the uploaded file. Your original local file is not overwritten, and you can decide how to save the result after downloading it.
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