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Welcome to the ImageWatermark Pro documentation. Learn how to protect your digital assets directly from your browser.

Quick Start Guide

Watermarking hundreds of images is completely free and takes seconds:

  1. Upload Media: Click the "Upload" card in the center canvas to select files or entire folders.
  2. Add a Watermark: Click the "+" button in the properties panel to add Text or upload an Image/Logo.
  3. Position & Style: Drag the watermark to position it, or use the properties panel to adjust opacity, tiling, and fonts.
  4. Export All: Click the "Export Batch" button in the top right. The processing happens instantly on your device via WebGPU.

Watermark Types

We support two primary types of watermarks:

  • Text Watermarks: Perfect for adding copyright notices (© 2026 Your Name) or website URLs. You can customize the font family, color, opacity, and apply 360-degree rotation.
  • Image Logos: Upload a transparent .png or .svg file to stamp your brand logo onto images.

Stock Photo Grid Pass

Enable the Tile Matrix toggle in the properties panel for any watermark to automatically replicate it in a cross-hatch pattern across the entire image, perfect for stock photo previews.

PDF Document Stamping

Unlike standard image editors, ImageWatermark Pro fully supports multi-page PDFs.

When you upload a PDF, we display the first page on the canvas. Any watermark you position here will be losslessly stamped onto every single page of the PDF upon export, preserving the original text layers and vector data beneath the stamp.

Keyboard Shortcuts

For power users, navigate the canvas faster:

  • Ctrl + Z (Windows) / Cmd + Z (Mac) - Undo
  • Ctrl + Y (Windows) / Cmd + Shift + Z (Mac) - Redo
  • Delete / Backspace - Delete the currently selected watermark.
  • Arrow Keys - Nudge the watermark precisely around the canvas.

Privacy & Security (100% Offline)

ImageWatermark Pro is built on a "Zero-Trust" architecture. We do not have servers.

When you click "Export", all image, PDF, and video encoding occurs locally on your machine's CPU/GPU using advanced WebAssembly (WASM). Your private files never leave your device, guaranteeing 100% confidentiality.