Watermark Adder

A professional digital protection suite for photographers and content creators. Upload up to 50 images and apply fully customizable watermarks — choose between custom text with 8 professional fonts or your own logo (PNG/SVG). Place the watermark precisely with a 3x3 position grid and fine-tune with X/Y offset sliders. Enable diagonal tiling for full-image coverage with adjustable density. Control opacity, scale, rotation, fill and stroke colours, and canvas blend modes (Normal, Screen, Overlay, Multiply, and more). For invisible protection, toggle Stealth Metadata to embed your copyright or owner ID directly into EXIF fields (Copyright, ImageDescription, UserComment) using piexifjs. Preview every change in real-time on a live canvas, toggle between original and watermarked views, and zoom in to inspect details. Process the entire batch and download individual files or one-click export everything as a ZIP. All processing runs 100% in your browser — your images never leave your device.