Back to All Tools
🔒 100% Private — Files never leave your device.
💧
Watermark Images Online Free (Batch Mode)
Add copyright text or PNG logo watermark across single or batch photos. Custom opacity, font, 9-grid placement, and diagonal repeat tile.
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 Watermark Images Online Free (Batch Mode)
Fast, local, and 100% free tool. No software installation or cloud uploads required.
1
Upload Photos
Select one or multiple photos to watermark.
2
Choose Watermark
Type custom text or upload your company logo.
3
Adjust Placement
Set opacity, rotation, size, and position (9-grid or diagonal tile).
4
Batch Download
Apply to all images simultaneously and download as a ZIP.
🛡️
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
Yes, batch watermarking is fully supported. Upload 20+ photos and apply the identical watermark styling to all files in seconds.