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🔒 100% Private — Files never leave your device.
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Batch Watermark Photos Online
Apply watermarks to hundreds of photos in your browser in seconds. Fast HTML5 canvas rendering with ZIP export.
Drop your images here, or browse
Supports JPG, PNG, WebP, AVIF & iPhone HEIC. Batch processing supported.
💡 Pro-tip: PressCtrl + Vto paste screenshots directly
How to Use the Batch Watermark Photos Online
Fast, local, and 100% free tool. No software installation or cloud uploads required.
1
Drag All Images
Upload dozens of photos at once.
2
Configure Style
Set text, color, transparency, and size.
3
Preview Batch
Preview each file in the batch gallery.
4
Download ZIP
Export all watermarked photos in one click.
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100% Client-Side In-RAM Privacy Guarantee
Every byte of image processing is calculated locally on your CPU/GPU using modern WebAssembly, Canvas API, and HTML5 Web Workers. Zero images are ever uploaded to cloud servers or stored in remote databases.
✓ 100% Local In-RAM✓ Zero Server Uploads✓ Unlimited Free Use✓ GDPR & HIPAA Safe
Frequently Asked Questions
No file count limits. Everything runs directly inside your computer RAM.