PDF添加水印
PDF添加水印 online fast, free and secure.
Drag & drop your PDF here, or click to browse
Supports PDF documents up to 50MB • 100% In-Browser Private
document.pdf
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How to use PDF添加水印 in 3 simple steps
Upload PDF Document
Drag and drop your PDF file or click to select a document from your computer or mobile device.
Customize Text & Position
Type your custom watermark text (e.g. Confidential, Draft, Sample) and adjust opacity, rotation, font size, and color.
Apply & Download
Preview the watermark over your document pages and download the watermarked PDF instantly with zero server uploads.
Key capabilities & features of PDF添加水印
Flexible Watermark Positions
Position your watermark in the center, diagonal (-45°), top header, bottom footer, or repeat as a tiled pattern across all pages.
Granular Opacity Control
Adjust transparency from 5% to 100% so text remains readable underneath your protective watermark.
Custom Angle & Font Size
Fine-tune rotation from -90° to +90° and scale text size to fit any document format or orientation.
Multi-Page Batch Application
Stamp every page of your PDF in a single click with consistent alignment and style across the entire document.
High-Fidelity PDF Vector Text
Watermarks are embedded as sharp vector text elements without rasterizing or degrading the original document quality.
100% Private Client-Side Stamping
Your contracts, financial statements, and confidential papers are processed locally in your browser sandbox.