How to Use Watermark Stamper
Upload the photo or batch queue you want to protect.
Choose Text Watermark (with custom font, color, and size) or upload your PNG logo.
Adjust opacity transparency, rotation angle, and 9-point anchor alignment (or full diagonal tiling).
Download protected watermarked images instantly.
Zero Cloud Uploads
Your files never touch remote servers. All processing executes inside your browser memory via WebAssembly.
High-Fidelity Output
Master 4K and 8K visual fidelity without forced downsampling, compression artifacts, or added watermarks.
Connected Toolchain
Send processed results directly into other Zailo Graph utilities without re-uploading.
Frequently Asked Questions
Can I batch watermark multiple photos at once?
Yes. Upload up to 50 photos in batch mode and apply your brand watermark across all files simultaneously.
Does watermarking re-encode EXIF copyright metadata?
Yes. You can optionally embed your copyright notice into the EXIF header simultaneously.