Bulk Watermark Applicator
Protect your images locally. Add customizable text or logo overlays to up to 50 images instantly without uploading anything to a server.
Drag & Drop up to 50 images
Support for JPG, PNG, WEBP (Max 25MB per file)
Batch processing happens entirely in your browser.
Watermark Settings
0 ImagesNo logo uploaded.
Live Preview (Image 1)
Applying watermarks...
Packing files into ZIP archive.
How to Bulk Watermark
1. Select Images
Drag and drop up to 50 images into the drop zone. We support high-resolution JPG, PNG, and WEBP formats.
2. Configure Overlay
Choose between custom text or a logo. Adjust the 9-point grid placement, scale, and transparency using the live preview.
3. Process & Download
Click process to render all images instantly via your browser. You will receive a single neatly packed ZIP file.
Why Use Our Watermark Tool?
🔒 100% Client-Side
We leverage the Canvas API. Your photos are never uploaded to a server, ensuring absolute privacy.
⚡ Lightning Fast Bulk
Because there is no upload time, rendering dozens of images takes seconds directly on your device CPU.
🎯 Pixel-Perfect Placement
The 9-point grid positioning system ensures your watermark stays consistent across images of varying sizes.
📦 Auto-ZIP Export
Avoid clicking download 50 times. Our JSZip integration bundles everything into one clean download.
Frequently Asked Questions
No. Our rendering engine exports your watermarked images at 100% visual quality based on the original file resolution, ensuring your assets remain sharp.
Yes, the tool fully supports alpha-channel transparency for PNG uploads. Simply select "Logo/Image" mode and adjust the master opacity slider to your preference.
Because processing happens entirely within your web browser's memory (RAM). Capping batches at 50 prevents browser crashes and ensures smooth performance on all devices.