Free Bulk Watermark Adder Online
Add custom text or logo watermark to multiple images at once — free, instant, and 100% browser-based. No signup required. Your images never leave your device.
Bulk Image Watermark Tool by Instant Convert Tools
Upload Images
Drag & drop images here or click to browse
Supports PNG, JPG, JPEG, WEBP
Watermark Settings
Watermarked Images
No watermarked images yet
Upload images, configure watermark, and apply
True Bulk Processing
Upload hundreds of images and watermark all of them in one click — same settings applied instantly
Full Customization
Text or logo watermark, 9 positions, opacity control, rotation, font size, and color — all live preview
100% Private & Secure
Everything happens in your browser. No images are uploaded to any server. Completely safe.
Bulk Watermark Adder — Free Online Tool
Our free Bulk Watermark Adder lets you add custom text or logo watermarks to multiple images simultaneously. Whether you're a photographer protecting your portfolio, an e-commerce seller branding product photos, or a designer delivering client assets — this tool saves hours of manual work.
Configure your watermark once — choose text or logo, set position, opacity, size, rotation, and color — then apply it to all your images in one click. Download individual images or grab everything as a ZIP file.
Unlike desktop software, there's nothing to install. Unlike other online tools, there's no file size limit, no signup, and no watermark on your watermarks. Your files stay private — all processing happens locally in your browser using the HTML5 Canvas API.
How to Add Watermark to Multiple Images
1. Upload Images
Select multiple images or an entire folder — PNG, JPG, JPEG, WEBP all supported.
2. Set Watermark
Type your text or upload a logo. Adjust position, opacity, size, and rotation.
3. Preview
See a live preview on one of your images before applying to all.
4. Download
Download watermarked images one by one or as a single ZIP file.
Why Trust Instant Convert Tools?
We prioritize speed, privacy, and simplicity. Your images are never stored or uploaded, no tracking is performed, and no signup is required. Just fast, reliable tools that work.